Aníbal Sabater, Gretta Walters, James Hosking Participate in ABA International Arbitration Skills Masterclass

June 2025—Chaffetz Lindsey’s Aníbal Sabater, Gretta Walters, and James Hosking participated in the ABA International Law Section’s 2025 International Arbitration Skills Masterclass, held virtually from Tuesday, June 17^th– Wednesday, June 18^th.

The program offered junior and mid-level arbitration practitioners a unique opportunity to develop and refine their advocacy skills through a combination of faculty-led plenary discussions and hands-on practice sessions.

Aníbal served as a panelist during the session titled “Cross-Examining and Redirecting Fact Witnesses”. He was joined by internationally recognized colleagues including Henri Alvarez (Alvarez Arbitration), Jan Paulsson (Independent Arbitrator), and Eduardo Zuleta (Arbitration Chambers), with Diana Paraguacuto-Mahéo (Foley Hoag) moderating.

Gretta Walters joined the session “Cross-examining and Redirecting Expert Witnesses” with Preeti Bhagnani (White & Case) and Ari MacKinnon (Cleary Gottlieb). Cesar Pereira (Justen Pereira Oliveira & Talamini) moderated the discussion.

James and Gretta acted as faculty giving feedback to workshop participants during witness examination sessions.

The Masterclass is designed to give participants practical skills critical to the arbitral process, and the fact witness cross-examination panel will feature insights from leading practitioners on how to effectively challenge or rehabilitate testimony in high-stakes international disputes.

For more information, visit the ABA International Law Section’s website here.