Israel declares test a `` major milestone '' in development of anti-missile system . Score: 6 Jerusalem ( CNN ) -- Israel completed a successful test flight of its Arrow 3 interceptor system on Monday , the Ministry of Defense said in a statement . The United States and Israel are jointly developing the system .
Israel declares test a `` major milestone '' in development of anti-missile system . Score: 6 The United States and Israel are jointly developing the system .