The prime minister said Saturday that the U.S. wants to build a radar base in the Czech Republic as part of its global missile defense system, a move that prompted a Russian official to immediately warn of “retaliatory measures.” Washington has been negotiating with Poland and the Czech Republic, both former communist states that now belong to NATO, as it explores where to set up a missile defense site in Eastern Europe. The U.S. already has missile interceptor sites in Alaska and California. Full Story