On World Humanitarian Day, we honor the steadfast commitment of aid workers — especially USAID’s local partners — who save lives, often at the risk of their own. — Twenty years ago today, a suicide bomber attacked the UN headquarters at the Canal Hotel in Baghdad, Iraq, killing 22 humanitarian aid workers and injuring more than 100 others. Five years later, the United Nations established August 19 as World Humanitarian Day to remember the fallen, honor the service and…