KHROMOVE, Ukraine — Pressure mounted Saturday on Ukrainian troops and civilians hunkering down in Bakhmut, as Kyiv’s forces tried to help residents flee amid what Western analysts say may be preparations for a Ukrainian withdrawal from the eastern city that Russian forces have spent months trying to capture. A woman was killed and two men were badly wounded by shelling while trying to cross a makeshift bridge out of Bakhmut on Saturday, according to Ukrainian troops who were assisting them. A Ukrainian army representative who asked not to be named for operational reasons told The Associated Press that it was...