From left: Commander, Combined Forces Command, Gen. Vincent Brooks; ROK Chairman General Sun Jin Lee; Chairman of the Joint Chiefs of Staff Gen. Joseph F. Dunford; Japanese Chief of Staff Adm. Katsutoshi Kawano; and Commander, U.S. Pacific Command Adm. Harry B. Harris. The senior military leaders met at the Pentagon Oct. 14 to discuss trilateral collaboration in order to respond to increasing North Korean nuclear and missile threats.