Officials say troops were killed when missile fired by Houti rebels hit a weapons storage depot near their position in Marib provinceTwenty-two soldiers from the United Arab Emirates have been killed while taking part in Saudi-led operations in Yemen against Houthirebels – the largest single loss for the Gulf nation’s military in the conflict.Pro-government Yemeni security officials said the troops were killed on Friday when a Houthi missile hit a weapons storage depot near their position in the province of Marib.