President Joe Biden said late Saturday that the U.S. military had completed the evacuation of U.S. embassy personnel in Sudan, and called for end to “unconscionable” violence there as two rival leaders battled for power in the African country. Biden thanked the U.S. troops who carried out the mission to extract American staffers in Sudan. With the evacuation, Washington shuttered the U.S. mission in Khartoum indefinitely. The staffers were airlifted to an undisclosed location in Ethiopia, according to two U.S. officials familiar with the mission. U.S. troops carried out the operation as fighting between two armed Sudanese commanders —which has killed more than 400, put the nation at risk of collapse and could have consequences far beyond its borders—moved into a second week.