NAIROBI, Kenya — It began with a helicopter evacuation of American diplomats from Sudan’s besieged capital city just after midnight Sunday, then turned into a full-fledged exodus of foreign officials and citizens of other nations as the battle raged around them.
At the United States Embassy in Khartoum, an elite team of Navy SEALs ushered up to 90 people onto aircraft before taking off for Djibouti, 800 miles away.
Hours later, a United Nations convoy began snaking its way out of the…