A flag display for a meeting between Commandant of the Marine Corps Gen. Joseph F. Dunford Jr. and Gen. Harukazu Saito, the chief of staff of Japan Air Self-Defense Force, at Tokyo, Japan, March 23, 2015. (Gabriela Garcia/USMC) YOKOSUKA NAVAL BASE, Japan — The latest 2016 U.S. defense bill assumes Japan will adopt government-backed proposals on defending its allies, even though Japanese lawmakers