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.
http://www.indiareacts.com/archivefeatu ... ctg=policy
http://news.bbc.co.uk/1/hi/world/south_asia/1550366.stm
http://www.janes.com/security/internati ... _1_n.shtml
This right off the bat illegitimizes the war.