what happened on monday over the ukraine by u.s. carriers. other airlines following suit, united u.s. air and some international carriers, including lufthansa, klm and norwegian. but israel is pushing back, trying to ensure airlines it is safe it fly to and from its main airport. an angry transport minister calling the u.s. move a quote prize to terror. the country s own airline continues to fly. currently the faa pro hb its u.s. airlines from flying over eastern ukraine and crimea, north korea, ethiopia and libya. u.s. planes can fly over iraq but only above 20,000 feet. and aa warns of dangers, including missiles and small arms, for eight countries