Yemeni children hold automatic rifles as they join grown up relatives in a tribal gathering organised by the Shiite Huthi movement in Sanaa on February 4, 2015 in support of the militia which overran the Yemeni capital in September. The Huthis later seized the presidential palace and key government buildings on January 20, plunging the country deeper into crisis and prompting President Abedrabbo Mansour Hadi and his premier to tender their resignations.   AFP PHOTO / MOHAMMED HUWAIS        (Photo credit should read MOHAMMED HUWAIS/AFP/Getty Images)