REGIONAL SECURITY ISSUES U.S. Defense Secretary Chuck Hagel hosts a lunch with representatives from the Association of Southeast Asian Nations, known as ASEAN, at the Pentagon, Dec. 11, 2013. Hagel met with ambassadors and senior diplomats from the 10 ASEAN nations to discuss regional security issues. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 611608-Z-BTD74-775.jpg Photo Gallery