Oh, you're probably asking, how is the war in Afghanistan Illegal?
Well, for one, it was concieved before the 9/11 attacks happened. The US informed many countries in the Summer of 2001 that they may be attacking Afghanistan.
that might be true ninty , but the taliban didnt help matters by not turning over OBL , and please dont say that the us didnt give them any time to think about turning him over , this whole operation in afghanistan might been avoided if the taliban had gave up OBL.