Minister of Defense Edmundo Perez Yoma and Secretary Cohen sign a Joint Statement on Defense Environmental Cooperation. Minister of Defense Edmundo Perez Yoma (left), of the Republic of Chile, and Secretary of Defense William S. Cohen (right) sign a Joint Statement on Defense Environmental Cooperation prior to their joint press conference in Santiago, Chile on Nov. 16, 1999. Cohen is in Santiago to meet with defense officials and discuss issues of interest to both nations. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 433462-K-YHJ68-572.jpg Photo Gallery