We supported saddam until he started gasing all the shia's and Kurds in his country. The Iraq war was in the making for atleast ten years before it began. Saddam ignored the UN on multiple occasions, it's actually surprising we didn't go in during the late 90's. The taliban didn't take over Afghanistan until way after the soviets left. We may have supported the mujahideen at one point, but obviously they started attacking us so yea that make us enemies.