By Idrees Ali, Dmitry Zhdannikov and Phil Stewart WASHINGTON/DAVOS (Reuters) -The U.S. military carried out new strikes in Yemen on Tuesday against anti-ship ballistic missiles in a Houthi-controlled part of the country as a missile struck a Greek-owned vessel in the Red Sea. Attacks by the Iran-allied Houthi militia on ships in the region since November have affected companies and alarmed major powers – an escalation of Israel’s more than three-month-old war with Palestinian Hamas militants in Gaza. The Houthis say they are acting in solidarity with Palestinians and have threatened to expand …