“We are assuring the safety of all those who have worked with the United States and allied forces,” the Taliban’s spokesman, Zabihullah Mujahid, said during the group’s first news conference after retaking control of the country last August.

But in the Opinion video above, we show that the Taliban’s promises were hollow, with grave import. The video, the product of a seven-month investigation by the Opinion Video team of The New York Times, reveals that nearly 500 former government officials and members of the Afghan security forces were killed or forcibly disappeared during the Taliban’s first six months in power.