The United States and Japan have formalized an agreement to co-develop a major new weapon -- the first-ever, clean-sheet design for a counter-hypersonic missile called the Glide Phase Interceptor, an estimated multibillion-dollar development that will take about a decade to ready for production. On May 15, the Defense Department and the Ministry of Defense finalized a formal agreement to develop a ship-launched, guided missile under the U.S.-Japan bilateral memorandum of understanding for research, development, test and evaluation -- a deal...
