Smoke rises above the military academy following an airstrike carried out by the Saudi-led alliance, in Sana’a, Yemen, 11 April 2015. According to reports, the Saudi-led alliance’s airstrikes which began 25 March, have continued to target various Houthi military positions in the impoverished Arab state, but have so far done little to halt the Houthi military advances as they continue to make gains. EPA/YAHYA ARHAB