The Russian ambassador to the United Nations Vitaly Churkin abstains from a vote in the United Nations Security Council attempting to halt the escalating conflict in Yemen in New York April 14, 2015. The United Nations Security Council on Tuesday imposed an arms embargo targeting the Iran-allied Houthi rebels who rule most of the country and blacklisted the son of Yemen’s former president and a Houthi leader after veto-power Russia abstained. REUTERS/Lucas Jackson TPX IMAGES OF THE DAY