So the US got bogged down in one of its longest wars while the Soviets assisted the North Vietnamese Army in the Viet Cong. But then we paid them back by supporting the anti-communist Mujahideen after the Soviets invaded Afghanistan in 1979. Of course, as we now know, nobody conquers Afghanistan. Unless you are the Mongols. So after ten disastrous years, the Soviets finally abandoned Afghanistan. Some of those Mujahideen later became members of the Taliban, though, so it's difficult to say that anyone won that war. But it wasn't just Asia.