Public International Law
State immunities, diplomatic protection, the law of international organisations, the status and privileges of the diplomatic service and the repatriation of cultural property.
Legal and GR
Amadeus is a legal and government relations practice. We advise UHNWIs, heads of state and governments on matters of public international law, including international criminal law, international investment law and sanctions. We are regularly retained to conduct cross-border investigations and advise on international legal proceedings, asset protection, challenge INTERPOL notices and extradition matters. We also advise private actors on market entry, investment protection and regulatory compliance.
/ 01 — Expertise
Ten practice areas,
one integrated firm
We are regularly retained to conduct cross-border investigations and advise on international legal proceedings, asset protection, challenge INTERPOL notices and extradition matters. We also advise private actors on market entry, investment protection and regulatory compliance. Where a matter demands it, we integrate legal, diplomatic and communications strategy into a single framework, drawing on a long-established network of counsel, legal advisers and officials across relevant jurisdictions.
International Dispute Resolution
International arbitration, advisory on commercial proceedings, asset tracing and recovery.
Government Relations
Government relations across five theatres — Latin America, the United States, the United Kingdom, ECOWAS and ASEAN.
Sanctions
Delisting applications, transaction and compliance advice across OFAC, OFSI and EU sanctions frameworks.
White-Collar Crime
Advising corporates and senior executives facing white-collar crime investigations and regulatory scrutiny across borders.
Extradition
We advise individuals at every stage of extradition exposure. Where a matter demands it, we integrate legal, diplomatic and communications strategy into a single framework.
Mutual Legal Assistance
We advise clients who face, or seek to resist, state action conducted through MLA channels, drawing on our expertise in public international law.
INTERPOL
Acting for individuals and States across the full spectrum of INTERPOL-related matters.
Immigration
Advising private clients on complex immigration matters, including those facing a genuine risk of persecution or treatment in breach of their fundamental rights.
Investment Structuring & Asset Protection
Over three decades of experience in global M&A and asset management in emerging markets.
/ 02 — Case studies
Our Experience
What distinguishes us is first-hand experience of the circumstances our clients face. That experience results in advice that is rigorous, operationally sound and grounded in the realities of high-stakes international proceedings.
INTERPOL
Legal history through arbitration; acted for clients across more than 15 jurisdictions.
Brought the first successful challenge against a multilateral law-enforcement agency through arbitration; representations before the CCF in relation to Red Notices and Diffusions; acted for a state against another state under the auspices of INTERPOL's dispute settlement mechanism.
MLA & Extradition
Diplomatic protection, supranational fora and the human-rights mechanisms.
Represented individuals and States in extradition and mutual legal assistance proceedings before UN bodies, the African Commission, the ECOWAS Court of Justice and national courts, including a matter concluded by full U.S. presidential pardon.
International Dispute Resolution
From OIC treaty arbitration to multi-jurisdictional asset recovery.
Assisted in the first individual investor-State claim under the OIC Investment Treaty; advised on multi-jurisdictional asset recovery resulting in lifting of freezing-orders and discontinuance of proceedings in Liechtenstein, Bulgaria and Italy.
- Defence Extradition Lawyers Forum
- Bar Human Rights Committee
- International Bar Association
- Association of Certified Sanctions Specialists
- Association of Certified Fraud Examiners
- Ukrainian Bar Association
/ 03 — People
Our team
We bring together world-class legal, intelligence and political expertise under one roof, deploying it in the interest of clients facing complex cross-border situations.
/ 04 — News & publications
Editorial
from the practice
Analysis, commentary and publications from the Amadeus team — covering developments in public international law, sanctions, INTERPOL practice, extradition and international dispute resolution.
Amadeus Authors Colombia Chapter of Chambers and Partners Global Practice Guide – Dispute Resolution 2026 – Trends and Developments
The Amadeus team of Maryna Pogibko, Rafat A Rizvi, and Mykhailo Grydzhuk contributed the Colombia chapter to the 2026 Dispute Resolution Global Practice Guide, providing expert analysis on how emerging policy shifts are reshaping the dispute resolution landscape and creating new opportunities for international business.
/ 05 — Contact
Contact Us
Amadeus is a legal and government relations practice. We bring together world-class legal, intelligence and political expertise under one roof, deploying it in the interest of clients facing complex cross-border situations.
London office
8–10 Hill Street, Mayfair
London W1J 5NG · United Kingdom
London W1J 5NG · United Kingdom
Telephone
Email