pushed for the US to get involved in the conflict, and said that it had empowered and armed extremists that would later turn against the United States.
Seems to be a common theme. The US did the same in the 80's by supporting the mujahideen during the war against the Soviets. Little did we know the mujahideen would later morph into al-Qaeda:
The Soviet war in Afghanistan lasted over nine years from December 1979 to February 1989. Part of the Cold War, it was fought between Soviet-led Afghan forces against multi-national insurgent groups called the Mujahideen, mostly composed of two alliances - the Peshawar Seven and the Tehran Eight. The Peshawar Seven insurgents received military training in neighboring Pakistan and China, as well as weapons and billions of dollars from the United States, United Kingdom, Saudi Arabia, and other countries...
...Contingents of so-called Afghan Arabs, foreign fighters who wished to wage jihad against the atheist communists, were also present. Notable among them was a young Saudi named Osama bin Laden, whose Arab group eventually evolved into al-Qaeda.