The US created the Mujahideen in July 1979 to lure the Soviets into Afghanistan - John Pilger

'The 1979 Soviet invasion of Afghanistan was on the invitation of the Afghan government of the day, facing a coup by radical [US funded] opposition. (https://t.me/inessaschannel/1649)

Much like the Syrian campaign of 2015 - from the perspective of international law, it was a legal intervention, grounded in the Soviet-Afghan friendship treaty of 5 December 1978.'