Xinhua Middle East news summary at 2200 GMT, April 22

SANAA -- Yemen's Houthis said in a statement on Tuesday that the group had shot down a U.S. MQ-9 drone over the Yemeni northwestern province of Hajjah, and launched fresh attacks against two U.S. aircraft carriers. "We shot down a hostile American MQ-9 drone while carrying out hostile missions in the airspace...