
International Arbitration: Counsel
USA Guide 2026 : USA - Nationwide
Rankings

Ranked Individuals
Ranked Individuals
About
Provided by Cleary Gottlieb Steen & Hamilton LLP
For more information about Cleary Gottlieb's International Arbitration practice, please visit https://www.clearygottlieb.com/practice-landing/international-arbitration
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Work Highlights
Provided by Chambers
Cleary advised Pluspetrol Resources Corporation in an ICC claim brought by Perupetro, alleging the company voluntarily liquidated itself in bad faith and in order to avoid environmental liabilities in connection with an hydrocarbon exploration license in Peru, and subsequently wrongfully claimed the license had been terminated.
Strengths
Provided by Chambers
They're very bright lawyers who always make themselves available and dig in very deep with intellectual rigor. They're very team-oriented as well and they excel at condensing complicated strategic issues and finding the pivot points to focus on.
International Arbitration: Counsel respondentUSAThey're very experienced, hardworking, intuitive and smart. At the same type, they're very normal people that are easy to work with. They have long lasting relations with clients and really know their business.
International Arbitration: Counsel respondentUSACleary has a deep bench of arbitration expertise and the cross-practice skills to litigate matters in any substantive area of law. They're strategically and discerningly aggressive - with the precision of surgeons rather than bludgeons. Their inter-practice work is where they really shine; it's a huge value add.
International Arbitration: Counsel respondentUSACleary’s department stands out for its ability to handle complex, high stakes disputes with strong cross-border coordination and strategic clarity. The team combines significant depth at partner level with a strong and technically capable associate bench and they are consistently responsive, accessible, and proactive. Communication is clear and timely, even in fast-moving, high stakes matters involving multiple jurisdictions.
International Arbitration: Counsel respondentUSATheir work is very fast and of very high quality. I always feel confident that they know what they're doing and, when you see the work, it's clearly of very high quality. They know the industry in detail, which allows them to have a thorough understanding of the commercial aspects involved. This, naturally, allows them to have a broader approach when drafting briefs or preparing for hearings.
International Arbitration: Counsel respondentUSA
Notable Practitioners
Provided by Chambers
Band 1 
Band 1 
Jeffrey Rosenthal
Jeffrey Rosenthal is an experienced litigator with particular strength in cross-border disputes. His practice includes serving as counsel in arbitration and handling the courtroom enforcement of awards. Jeffrey combines outstanding technical expertise with exceptional strategic vision in complex cross-border disputes.
International Arbitration: Counsel respondentUSAJeff is one of one. He is aggressive but strategically so - he is constantly searching for new and creative approaches and he is obsessed with excellence.
International Arbitration: Counsel respondentUSAJeff is a war machine. He is a very sophisticated, smart, experienced and tenacious litigator who excels at trial skills and strategy. He comes up to speed quickly, and his collaborative working style encourages and extracts substantial value from his team.
International Arbitration: Counsel respondentUSA
Band 4 
Band 4 
Ari D MacKinnon
Ari MacKinnon centers his practice on commercial arbitrations arising from Latin America. He is also experienced in enforcement matters. He is the smartest lawyer I've met. He is extremely intelligent and speaks excellent Spanish and is very culturally adjusted to the LatAM region - that has a lot of value.
International Arbitration: Counsel respondentUSAHe's incredibly good. He understands the details of the case and is deep in the legal analysis. The product he delivers is excellent.
International Arbitration: Counsel respondentUSAHe's committed to the client and he's studious, thorough and refined.
International Arbitration: Counsel respondentUSAAri is extraordinary. He's a good lawyer who is intelligent, prepares himself with precision and a good team leader.
International Arbitration: Counsel respondentUSAAri is an exceptional professional, who is attentive, quick, insightful and excellent in his approach.
International Arbitration: Counsel respondentUSA
Up and Coming 
Up and Coming 
Katie Gonzalez
Katie Gonzalez enjoys a burgeoning reputation for her international disputes practice, which sees her advising businesses and sovereigns on treaty claims and wider commercial disputes.
She had impressive dedication to our case.
International Arbitration: Counsel respondentUSAKatie Gonzalez is an exceptional professional.
International Arbitration: Counsel respondentUSA
Ranked Individuals at Cleary Gottlieb Steen & Hamilton LLP (4)
Members
Provided by Cleary Gottlieb Steen & Hamilton LLP

Jeffrey Rosenthal
View profile of Jeffrey Rosenthal
Ari D MacKinnon
View profile of Ari D MacKinnon
Katie Gonzalez
View profile of Katie Gonzalez
Cleary Gottlieb Steen & Hamilton LLP has rankings in the following guides
Band 4 Brazil 2025
Practice area: International Arbitration
Location: Brazil
View department profile for Brazil 2025Band 3 France 2026
Practice area: International Arbitration
Location: France
View department profile for France 2026Band 3 Global 2026
Practice area: International Arbitration
Location: France
View department profile for Global 2026Band 4 Global 2026
Practice area: International Arbitration
Location: Brazil
View department profile for Global 2026Band 4 Latin America 2026
Practice area: International Arbitration
Location: International Counsel
View department profile for Latin America 2026
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