Call for Papers

An invitation to contribute

The European Society of International Law invites scholars, researchers and practitioners to submit proposals for original contributions to the 22nd ESIL Annual Conference, hosted by Universidade Católica Portuguesa in Lisbon.

Under the theme “International Law and Future(s)”, ESIL 2027 will examine how international law can respond to profound changes in international society and help shape the rules, institutions and values needed for the future.

Proposals must be submitted by 31 January 2027.

About the call

ESIL 2027 invites proposals that explore how international law can respond to a changing international society and contribute to the development of its future rules, institutions and shared frameworks.

The Call welcomes original and innovative contributions engaging with one of the conference agorae. Proposals may address established or emerging questions of international law and may draw on doctrinal, theoretical, interdisciplinary or other appropriate approaches.

Alongside individual paper proposals, ESIL Interest Groups may submit complete agora panel proposals through the dedicated submission route described below.

Who can submit

We welcome contributions from across the international law community, including established scholars, early-career researchers and professionals working with international legal questions.

Scholars and researchers

Academics and researchers working in international law and closely related fields.

Early-career scholars

Postgraduate and doctoral candidates, postdoctoral researchers and scholars at an early stage of their careers.

Practitioners and professionals

Legal practitioners and professionals engaging with international law in institutional, public, private or policy settings.

ESIL Interest Groups

Interest Group conveners may submit complete agora panel proposals through the dedicated panel submission route.

Conference theme

International Law and Future(s)

International society is undergoing profound transformation. The increasing use of force, human-rights violations, climate and biodiversity risks, technological disruption, pressures surrounding natural resources and trade, and the erosion of multilateral cooperation are testing existing rules and institutions.

At the same time, different actors do not necessarily understand these risks — or the responses to them — in the same way. Changes in power, economic strength, technology and social expectations are challenging established legal assumptions and making common solutions increasingly difficult to achieve.

ESIL 2027 invites participants to imagine possible future(s) and to ask which rules, institutions and values international law should preserve, rethink or rebuild as international society continues to change.

Choose an agora

The ESIL 2027 programme is organised around twelve agorae grouped into three thematic clusters.
Individual paper proposals should be submitted to the agora that best matches their central question and contribution.

Agorae 10 and 11 are reserved for panel proposals submitted by ESIL Interest Groups and are not available for individual abstract submissions.

Cluster 1 — The Future of “Rules”

Agora 01Building Back Better the Rules on the Use of Force?The future of the rules governing the use of force, collective security and legal restraint.

The rules on the use of force established since 1945 are increasingly being tested by contemporary conflicts and changing forms of warfare. Questions surrounding self-defence, humanitarian intervention, neutrality, hybrid and non-linear warfare, and emerging military technologies are placing sustained pressure on established legal concepts.

These developments invite renewed reflection on the values, rules and principles that should continue to govern the use of force. Rather than assuming that the existing framework will remain unchanged, this agora asks what should be preserved, reconsidered or reconstructed as international law responds to new realities of conflict and security.

Questions to explore

  • Which principles governing the use of force should international law preserve or rethink?
  • How should existing rules respond to hybrid warfare, new technologies and changing concepts of self-defence?
  • What legal framework can best support peace, security and fairness in a changing international order?
Agora 04Disruption in the Age of AI and Emerging TechnologiesHow AI and emerging technologies are testing international legal rules, institutions and approaches to risk.

International law has long adapted to technological change, but the speed and scale of current developments are creating new forms of disruption. Artificial intelligence, autonomous weapons, cyber operations, deep-seabed technologies and geoengineering are among the innovations testing existing rules and principles.

These technologies may generate new risks for peace and security, the environment and human rights, while also reshaping the way legal systems respond to complex global problems. This agora invites reflection on whether international law is sufficiently equipped to regulate technological risk and what legal strategies may be needed for the future.

Questions to explore

  • Is international law equipped to regulate the risks created by AI and emerging technologies?
  • How should legal rules respond to technologies that develop faster than existing regulatory frameworks?
  • What forms of international cooperation and legal design are needed to govern technological disruption?
Agora 07International Legal Rules in Contact with Other DisciplinesThe role of interdisciplinary knowledge in shaping and interpreting international legal rules.

International law does not operate in isolation. Many of the political, social, economic and environmental questions addressed by international legal rules require knowledge from disciplines beyond law.

Climate and environmental law depend on scientific expertise; international trade law requires engagement with economics; and increasingly specialised areas of regulation demand that lawyers understand concepts and evidence developed elsewhere. Interdisciplinarity may therefore be essential to the future development of international law, while also creating challenges for legal reasoning and professional practice.

Questions to explore

  • What place should non-legal disciplines have in the development and interpretation of international law?
  • How can international lawyers engage with specialised knowledge without introducing new biases or misunderstandings?
  • Are legal professionals sufficiently prepared to work with increasingly complex non-legal expertise?
Agora 10ESIL Interest Group Panel ProposalsReserved for complete agora panel proposals submitted by ESIL Interest Group conveners.

Agora 10 is reserved for a complete panel proposal submitted by an ESIL Interest Group convener. Interest Group proposals follow a dedicated submission route and must present the panel as a coherent contribution to the conference programme.

Proposals should identify the Interest Group, panel concept and format, proposed participants and the individual works to be presented. The panel must result from a call for papers circulated to the Interest Group membership and should reflect geographical, gender and institutional diversity.

All agorae are scheduled for 1 hour 30 minutes and may include a maximum of four participants. A chair and three speakers is one possible format, but other panel or roundtable structures may be proposed.

Panel proposal requirements

  • Name of the ESIL Interest Group submitting the proposal
  • Contact details of the convener or conveners submitting it
  • Panel title, overall theme and expected contribution to the discussion
  • Proposed format — panel, roundtable or another suitable format
  • A complete set of abstracts for the individual contributions
  • An explanation of the process used to select the proposed contributions
  • Confirmation that the chair and speakers are ESIL members
  • A composition reflecting geographical, gender and institutional diversity

The programme committee may request changes to the proposed composition in order to meet the applicable diversity requirements.

Cluster 2 — The Future of “Institutions”

Agora 02A Shrinking Room for International Organizations?The future role of international organisations in an increasingly unilateral international order.

The expansion of international organisations after the Second World War reflected a period in which multilateral institutions were seen as central to peace, development, economic cooperation and international governance.

Today, the growing prominence of unilateral approaches in world politics raises questions about the future role and influence of those institutions. As international society changes, this agora asks whether international organisations can continue to perform the functions for which they were created and what place they should occupy in the future international legal order.

Questions to explore

  • What role should international organisations play in a less multilateral international environment?
  • How can existing institutions adapt to changing political and legal expectations?
  • Do current international organisations remain capable of supporting cooperation on shared global problems?
Agora 05Multilateral Regimes at Risk: The International Trade System and BeyondThe future of multilateral economic governance amid renewed protectionism, geopolitical competition and trade disruption.

The global trade order is undergoing profound transformation. Tariffs, export restraints and other measures once primarily associated with protectionism are increasingly being used as instruments of geopolitical strategy, economic security and strategic autonomy.

At the same time, states are turning to preferential trade agreements and alternative forms of cooperation as they respond to disruptions in the multilateral system. These developments raise fundamental questions about the resilience of international trade rules and the future of institutions such as the World Trade Organization.

Questions to explore

  • Do current trade measures threaten the international economic system or offer new ways to preserve it?
  • What future role should multilateral institutions such as the WTO play?
  • How can international economic governance balance openness, fairness, national interests and strategic autonomy?
Agora 08Digital Sovereignty in the 21st Century: Need but Mirage?How states can exercise sovereignty over infrastructures, data and digital systems that transcend territorial borders.

New technologies are placing increasing pressure on traditional territorial understandings of state sovereignty. Control over data, infrastructures and software is distributed among multiple public and private actors and often extends across national borders.

This creates challenges for legislation, enforcement and judicial authority, while prompting states to seek greater control over the digital environment. Yet the decentralised and transnational character of digital systems raises a fundamental question: whether meaningful digital sovereignty is both necessary and achievable.

Questions to explore

  • What should sovereignty mean in an increasingly digital and interconnected environment?
  • Can states exercise effective control over data, software and infrastructures that transcend territorial boundaries?
  • Is digital sovereignty a necessary legal objective, an achievable one, or both?
Agora 11ESIL Interest Group Panel ProposalsReserved for complete agora panel proposals submitted by ESIL Interest Group conveners.

Agora 11 is reserved for a complete panel proposal submitted by an ESIL Interest Group convener. Interest Group proposals follow a dedicated submission route and must present the panel as a coherent contribution to the conference programme.

Proposals should identify the Interest Group, panel concept and format, proposed participants and the individual works to be presented. The panel must result from a call for papers circulated to the Interest Group membership and should reflect geographical, gender and institutional diversity.

All agorae are scheduled for 1 hour 30 minutes and may include a maximum of four participants. A chair and three speakers is one possible format, but other panel or roundtable structures may be proposed.

Panel proposal requirements

  • Name of the ESIL Interest Group submitting the proposal
  • Contact details of the convener or conveners submitting it
  • Panel title, overall theme and expected contribution to the discussion
  • Proposed format — panel, roundtable or another suitable format
  • A complete set of abstracts for the individual contributions
  • An explanation of the process used to select the proposed contributions
  • Confirmation that the chair and speakers are ESIL members
  • A composition reflecting geographical, gender and institutional diversity

The programme committee may request changes to the proposed composition in order to meet the applicable diversity requirements.

Cluster 3 — The Future of “Us”

Agora 03Humor on Trial: A Case about Free Thought and Free Speech in a Polarised WorldFreedom of thought, freedom of expression and the changing legal limits of humour in polarised societies.

Thinking about the future requires space for open discussion, freedom of thought and freedom of expression. Yet recent developments suggest that the scope and limits of these freedoms are again being contested across academic debate, political speech, traditional media and online platforms.

Humour provides a particularly revealing example. Expressions once assumed to benefit from a very high degree of tolerance are increasingly becoming the subject of judicial disputes, including before international courts. These cases raise wider questions about how international law should address changing social expectations while protecting fundamental freedoms.

Questions to explore

  • How should international law protect freedom of thought and expression in increasingly polarised societies?
  • What can disputes concerning humour tell us about the changing limits of protected speech?
  • What role should international courts and legal standards play in defining those limits?
Agora 06The Space Race: Challenges and Uses of the Outer SpaceThe future regulation of outer space as commercial, technological and military activities continue to expand.

Outer space is increasingly central to everyday life. Navigation, telecommunications, satellite imagery, global trade, disaster management and military activities all depend on space-based infrastructure.

Since the 1967 Outer Space Treaty, many legal developments have taken the form of soft law, even as the number of actors and the range of commercial and technological activities in space have expanded significantly. Future developments — including tourism, mining, settlement and increasing militarisation — will place further pressure on the existing international legal framework.

Questions to explore

  • Does increasing commercial activity in outer space require stronger international regulation?
  • How should international law address space debris, environmental protection and the militarisation of outer space?
  • What rules will be needed for emerging activities such as space tourism, mining and settlement?
Agora 09Critical Minerals, Natural Resources, and Energy SafetyThe legal consequences of growing competition for critical resources, energy security and the global green transition.

The transition towards cleaner technologies and more sustainable forms of development is increasing global demand for critical minerals, natural resources and new energy systems.

This transformation creates significant legal and political tensions. Questions of sovereignty, resource distribution, extraction, corporate responsibility, environmental protection and supply-chain security increasingly intersect with geopolitical competition and energy security.

International law already contains mechanisms intended to address some of these challenges, from the common heritage regime under UNCLOS to emerging standards of corporate responsibility. This agora asks whether those frameworks remain sufficient for the pressures associated with the green transition and changing global resource needs.

Questions to explore

  • How should international law respond to growing competition for critical minerals and natural resources?
  • Can the green transition be reconciled with environmental, social and economic costs associated with resource extraction?
  • Do existing rules need to be reshaped to address energy security, resource concentration and supply-chain risks?
Agora 12Climate Law as a Promise of FutureThe future of international climate law as existing targets, litigation and regulatory frameworks face increasing pressure.

Current climate data suggest that the temperature goals established under the UNFCCC and the Paris Agreement remain difficult to achieve. At the same time, the first decade of the Paris Agreement has seen continued state action, growing climate litigation and an increasing number of requests for advisory opinions.

These developments point both to the limitations and to the continuing evolution of climate law. Questions concerning reparations, loss and damage, climate finance, geoengineering and states’ due-diligence obligations are likely to become increasingly important as the legal response to climate change develops.

Climate change may be the clearest example of a disruptive global environmental challenge, but many of these questions also extend to other areas of international environmental law.

Questions to explore

  • What scope remains for the development of international climate law through scholarship, litigation and advisory proceedings?
  • How should reparations interact with loss and damage and climate finance?
  • What legal frameworks are needed for geoengineering and for defining states’ due-diligence obligations on climate change?

How to submit

Prepare your contribution before opening the online form.
The submission process will guide you through the information required for your submission type.

1. Choose your submission route

Submit an individual paper proposal or, if you are an ESIL Interest Group convener, an agora panel proposal.

2. Prepare your materials

Prepare the required abstract, author information, biography, CV and any additional information that applies to your submission.

3. Complete the online form

Enter your proposal details, select the relevant agora or IG panel route and review all required information.

4. Receive the outcome

Submissions will be assessed by the programme committee. Applicants will be notified of the outcome by 31 March 2027.

5. Prepare for the conference

If selected, complete the required ESIL membership, paper and registration steps before attending ESIL 2027 in Lisbon.

Submission requirements

Before starting the form, make sure your materials are ready and review the rules that apply to your submission.
Individual papers and Interest Group panel proposals follow different requirements.

Content to prepare

Individual paper proposals

  • Submission title
  • Selected agora
  • Abstract of up to 500 words
  • 3–5 keywords
  • Short biography of up to 100 words
  • Short CV with relevant publications, up to 800 words
  • Author and co-author details, where applicable
  • Presentation format
  • ESIL membership information
  • Early-Career Scholar Prize information, if applicable

Core rules

One abstract per author

  • One agora per individual proposal
  • Submissions accepted in English or French
  • Joint submissions are permitted
  • One presenting author is identified for programme and speaker-registration purposes
  • Selected speakers must meet the applicable ESIL membership requirement
  • Selected speakers must submit the required paper and register separately for the conference
  • For joint submissions, the reduced speaker registration fee applies to one presenting author only.

Submitting an Interest Group panel?

ESIL Interest Group conveners may submit a complete agora panel proposal, including the panel concept, format, participants, individual abstracts and information on the selection process.
Specific composition, membership and diversity requirements apply.

Selection and next steps

Submissions will be reviewed by the programme committee against the criteria set out below.
Applicants will be notified of the outcome by 31 March 2027.

Selection criteria

Abstracts are assessed by the programme committee, including the relevant agora Chair and representatives of the ESIL Board and the host institution, against the selection criteria outlined below.

01

Originality

Present an original and innovative contribution that brings a fresh perspective to the legal question or issue addressed by your selected agora.

02

Presentation

Show originality in how the contribution will be presented, including video, animation, installation or another innovative format, where relevant.

03

Relevance

Demonstrate clear relevance to the selected agora and meaningful engagement with the conference theme, “International Law and Future(s)”.

04

Diversity

Support a diverse and balanced programme, in line with ESIL principles on diversity, equality and inclusion and its guidelines for conference and panel speakers.

Abstracts are assessed first. CV information is consulted at a second stage to support balanced panel composition. Proposals from scholars who have not spoken at previous ESIL events are particularly welcome; recent selected or invited Annual Conference speakers may be considered ineligible.

If selected

Successful applicants will receive further instructions after selection.
Selected speakers must complete the required membership, paper and registration steps before attending the conference in Lisbon.

01

Join ESIL

If you are not already a member, join ESIL by 30 April 2027. Failure to meet this requirement will result in withdrawal of the acceptance.

02

Submit draft

Submit a first draft (approx. 3,000 words, including footnotes) by 1 July 2027. Confirmed Prize candidates submit the Prize paper instead.

03

Register

After acceptance, once registration opens, register at the reduced speaker fee, with the early bird rate available during that period.

04

Present in Lisbon

Attend the conference in Lisbon from 9 to 11 September 2027 and present your contribution in the agora to which you have been selected.

Drafts may be reviewed by the programme committee, shared with the agora Chair and other speakers, and returned for amendments before the conference.

Additional opportunities

Eligible speakers may apply for ESIL travel or carers’ grants, request consideration for the Early-Career Scholar Prize, and submit a final paper for possible inclusion in the ESIL Proceedings.

Separate eligibility criteria and deadlines apply.

Send your proposal

If your materials are ready, continue to the online submission form.
Submissions close on 31 January 2027.

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