A technician prepares a prosthetic limb at a rehabilitation center in Sanaa, Yemen, on April 7, 2019. Large swathes of Yemen have been swamped by randomly-planted landmines, which are posing a lingering threat to the lives of citizens across the war-torn country. According to the United Nations, thousands of landmines, unexploded ordnance and other explosive war remnants have been left behind during the ongoing conflict in Yemen which has just entered its fifth year. (Xinhua/Mohammed Mohammed)