In this Saturday Sept. 7, 2019 photo, fighters of the 'Shelba' unit, allied with the U.N.-supported Libyan government, prepare for combat at the Salah-addin neighborhood front line in Tripoli, Libya. The US is making efforts to convince power brokers in Libya and Sudan to expel the Russian private military company Wagner, regional officials tell The Associated Press. The pressure comes after Washington expanded sanctions on the group. Wagner has played a role in Libya's conflict but has also been linked with a powerful Sudanese paramilitary. (AP Photo/Ricard Garcia Vilanova, File)