Multinational senior leader participants of the South American Defense Conference 2025 (SOUTHDEC 25) pose for a group photo in Buenos Aires, Argentina, Aug. 20, 2025. U.S. Navy Adm. Alvin Holsey, the commander of U.S. Southern Command (SOUTHCOM), joined senior defense leaders from South America to discuss security challenges and regional cooperation during SOUTHDEC 25, hosted by Argentina Aug. 20-21. (Photo by Senior Airman Christopher Bermudez, U.S. Southern Command)