WASHINGTON - The United States is considering keeping a key military air base in Bosnia-Herzegovina after NATO wraps up its peace mission there as part of a new force projection concept designed to facilitate the war on terror, military officials said Monday. The plan, whose final approval at the Pentagon is still pending, was disclosed to members of Congress amid growing concern that Bosnia may become a "safe haven" for al-Qaeda-affiliated Islamic militant groups that could use it as a base for operations in Europe and elsewhere. Major General James Darden, a senior representative of the US European Command, told...