From left to right, Assistant Secretary of Defense for Homeland Defense and Hemisphere Affairs M. Roosevelt Ditlevson; Argentine Brig. Gen. Xavier Isaac, Chief of the Argentine Armed Forces’ Joint Staff; Argentine Minister of Defense Luis Petri; and U.S. Navy Adm. Alvin Holsey, commander of U.S. Southern Command, stand for national anthems during the South American Defense Conference 2025 (SOUTHDEC 25) in Buenos Aires, Argentina, Aug. 20, 2025. Holsey 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)