

39th ACUNS Annual Meeting
Multilateralism under Challenge and the Future of the Pact
Universidade NOVA de Lisboa
Lisbon, Portugal | Wednesday, 1 July – Friday, 3 July 2026
We are excited to announce that registration for the Annual Meeting is open now! The registration deadline has been extended to 11:59 PM EST, Friday, April 10 2026 for presenters.
DIFFICULTY WITH MEMBERSHIP REGISTRATION/ACCOUNT ACCESS
While we with our platform developer to resolve the access issue, our team is happy to help register your ACUNS profile manually! Just send the following information to admin@acuns.org:
- A copy of the receipt from your membership registration fee
- Your given name
- Your family name
- The email for your ACUNS account (AKA your username)
DIFFICULTY WITH ANNUAL MEETING REGISTRATION — INDIVIDUAL MEMBERS
If you are having difficulty submitting the Annual Meeting registration form, select the “Other” option when asked how you would like to pay the conference registration fee & try resubmitting. Then, follow the instructions below to complete the online payment using an alternate method. You can then finalize your registration by responding to this email with the following:
- Copy of your payment receipt
- Your given name
- Your family name
- Title of your paper
DIFFICULTY PROCESSING ONLINE PAYMENT
For an alternate method of completing an online payment for ACUNS membership or conference registration, please use the form linked HERE (also accessible via the yellow “DONATE” button on the top right of the ACUNS webpage). In the “Write a Note” section, describe the specific purpose(s) of your payment—i.e. the type of ACUNS membership and/or Annual Meeting registration.
Then, use the “Another Amount” option to enter the appropriate payment amount. The payment scale for different types of membership is available HERE. Registration for the 2026 Annual Meeting is US$30 for virtual attendance and US$100 for in-person attendance.
If these suggestions do not address the issue you are experiencing, or if you have any questions about the steps described above, please reach out to us at admin@acuns.org. We appreciate your understanding and patience as we work through these disruptions, and apologize for the inconvenience.
DIFFICULTY CREATING OR RENEWING AN INSTITUTIONAL MEMBERSHIP
For those experiencing difficulty creating or renewing their institutional membership via the form on our website, please respond to this email with:
- The official name of your organization
- The following information for the individuals associated with your organization that will be creating and/or renewing their ACUNS profiles:
- Given & family name
- Email (AKA profile username)
- Which individual will be the institutional manager for your organization’s profile
- The receipt from your 2026 institutional membership payment
DIFFICULTY WITH ANNUAL MEETING REGISTRATION — INSTITUTIONAL MEMBERS
If you would like to register some of the members of your organization for the Annual Meeting, please reply reply to this email with:
- The official name of your organization
- Your level of institutional membership
- The following information for each individual that you would like to register for the conference:
- Given & family name
- Title of their paper
ALTERNATE PAYMENT METHOD
For an alternate method of completing an online payment for ACUNS membership, please use the form linked HERE (also accessible via the yellow “DONATE” button on the top right of the ACUNS webpage). In the “Write a Note” section, indicate the type of institutional membership that you are registering for and use the “Another Amount” option to enter the appropriate payment amount. (The payment scale for different types of membership is available HERE.)
If you are unable to process your payment in this manner, please reach out to admin@acuns.org to request a wire transfer invoice or explore alternative forms of payment.
Please fill out the following form if you require a visa to travel to Portugal for the 2026 ACUNS Annual Meeting.
Please consult the Practical Guide for Participants below for information on hotel accommodations, transportation options, the Annual Meeting venue at NOVA University Lisbon, and tourist attractions.
Description
The 2026 ACUNS Annual Meeting will examine how multilateral governance can be maintained despite challenges from major and emerging powers, continuing armed conflicts, humanitarian emergencies, overheated planet, and other crises. In September 2024, the Summit of the Future galvanized attention worldwide on rebuilding trust and gaps in global governance; reaffirming the UN Charter, 2030 Agenda, and other existing commitments; and renewing the multilateral system to prepare for over-the-horizon challenges and opportunities. Responding to unilateral funding cuts by the world body’s largest donor, the Secretary-General’s UN80 Initiative, in 2025, is intended to streamline and consolidate the UN system, while building momentum for delivery of the Pact for the Future – the 2024 Summit’s chief outcome – in the run-up to its 2028 high-level review. Together, the Pact and UN80 aspire to re-commit Member States to multilateral cooperation and international law and to reform global institutions toward resilience, equity, innovation, and intergenerational justice. The current international climate calls into question some aspects of these hopeful scenarios.
The Annual Meeting will critically assess the UN system’s capacity to facilitate multilateral cooperation and reflect on its performance since the last comprehensive UN system-wide reform effort, the UN60 World Summit in 2005. We invited panels and papers that examine challenges to multilateralism in current or previous times, how they have been and can be overcome, and what opportunities they provide. We also welcomed contributions that focus on the tension between power and norms, between political declarations and actions/implementation in various fields.
Submissions were invited under one of the following broad thematic categories:
- Civil society, youth, local communities
- The Pact for the Future, UN80 Initiative, UN Charter reform, and UN financial crisis
- Challenges to reforming multilateral institutions and possible solutions/opportunities
- Regional organizations as building blocks for global governance innovation
- International law and international courts
- Peace, security, and conflict prevention
- Global economic governance and financing for development, poverty and inequality reduction
- Human rights, refugees, and humanitarian assistance
- Climate change and the environment
- Science, technology, and digital governance
The call for submissions has been closed.
Prospective applicants should contact admin@acuns.org with any questions.
Selected participants will be notified in February 2026.
More information about becoming an Annual Meeting Sponsor is available on this page.
Richard Ponzio
Senior Fellow & Director
Stimson Center
Vesselin Popovski
Professor and Vice-Dean
Jindal Global Law School
Julia Seixas
Professor
Universidade NOVA de Lisboa
Adriana Abdenur
Co-President
Global Fund for a New Economy

2026 ACUNS Lecture in Honor of Kofi Annan
Jean-Pierre Lacroix
Under-Secretary-General for Peace Operations
United Nations

2026 ACUNS Lecture in Honor of John Holmes
Kitty van der Heijden
Assistant Secretary-General & Deputy-Executive Director
UNICEF

For questions, contact admin@acuns.org.
Last Updated: Tuesday, 31 March 2026