Forces of Libya’s U.N.-backed government seized control of the last remaining western stronghold of militia commander Khalifa Hifter on Friday, dealing a major setback to his ambitions to wrest control of the country. Pro-government fighters backed by Turkey reached the center of Tarhuna, roughly 40 miles southeast of the capital, Tripoli, on Friday morning after Hifter’s forces retreated, according to military commanders and security analysts. Videos posted on social media showed pickup trucks mounted with machine guns rolling into enclaves and fighters flashing victory signs. Mohammed Gnounou, a military spokesman for the Tripoli government, said in a statement that its fighters entered the city from four directions and gave Hifter’s forces […]