"The U.N. Charter provides that all member states must settle their international disputes by peaceful means, and no nation can use military force except in self-defense or when authorized by the Security Council. After the 9/11 attacks, the council passed two resolutions, neither of which authorized the use of military force in Afghanistan. Resolutions 1368 and 1373 condemned the Sept. 11 attacks and ordered the freezing of assets; the criminalizing of terrorist activity; the prevention of the commission of and support for terrorist attacks; and the taking of necessary steps to prevent the commission of terrorist activity, including the sharing of information. In addition, it urged ratification and enforcement of the international conventions against terrorism.
The invasion of Afghanistan was not legitimate self-defense under article 51 of the charter because the attacks on Sept. 11 were criminal attacks, not "armed attacks" by another country. Afghanistan did not attack the United States. In fact, 15 of the 19 hijackers came from Saudi Arabia. Furthermore, there was not an imminent threat of an armed attack on the United States after Sept. 11, or Bush would not have waited three weeks before initiating his October 2001 bombing campaign. The necessity for self-defense must be "instant, overwhelming, leaving no choice of means, and no moment for deliberation." This classic principle of self-defense in international law has been affirmed by the Nuremberg Tribunal and the U.N. General Assembly. "
...that Congress can only declare war if the U.N. is on board? Who was the government of Afghanistan? How exactly did the U.N. see these resolutions being enforced with the Taliban in power?