LEIPZIG, Germany—Sayed Sadaat used to be communications minister in the Afghan government before moving to Germany last Sept. in the hope of a better future. Now he is a delivery man in the eastern city of Leipzig. He said he was criticized at home for taking such a job after having served in the government for two years, leaving office in 2018. But for him now, a job is a job. “I have nothing to feel guilty about,” the 49-year-old said, standing in his orange uniform next to his bike. “I hope other politicians also follow the same path, working with the public rather than just hiding.” His story has gained particular prominence with the chaos unfolding at home after the Taliban takeover. Family and friends of his also want to leave—hoping to join the thousands of others on evacuation flights or trying to find other routes out. With the …