In Yemen, tens of thousands took to the streets to protest the U.S.-backed, Saudi-led offensive against Houthi rebels on the first anniversary of the campaign. The protests were said to be the largest in Yemen since the 2011 demonstrations forced the resignation of President Ali Abdullah Saleh. Since the U.S.-backed, Saudi-led intervention began last March, more than 6,200 people have been killed in Yemen, about half of them civilians.