The Defense Department is exploring Chinese proposals to develop a bilateral notification system for major military activities as well as "rules of behavior" for air and naval forces, Defense Secretary Chuck Hagel and China's defense minister, Gen. Chang Wanquan, said today. In a joint press conference at the Pentagon, Hagel said he "welcomed" discussion of the ideas. "Our staffs are exploring those initiatives and will continue discussing them," he said. Chang, who spoke through a translator, said he and Hagel...