NATO invokes mutual defense clause for first time.
Saudi Arabia, Egypt, and Jordan pledge to aid US probe.
Pakistan agrees to help in US-led action in Afghanistan.
Russia OKs ex-republics aiding US in Afghanistan.
British Prime Minister Tony Blair warns Taliban, "Surrender the terrorists or surrender power."
British forces join airstrikes. France, Germany, Russia, and Japan express support.
Czech officials say Mohamed Atta met with Iraqi agent in Prague.
German parliament narrowly approves troop deployment.
US, Philippines announce creation of joint force targeting Abu Sayyaf, an extremist group linked to Al Qaeda.
Bush calls Iran, Iraq, and North Korea an "axis of evil" in State of the Union address.
Blair says Iraq's pursuit of weapons of mass destruction represent a threat.
US special forces are reportedly arriving in Yemen to train local forces in antiterror operations.
US soldiers arrive to help Georgia’s military against extremists connected to Al Qaeda.
Bush begins weeklong European tour seeking support for war on terror.
Russia becomes limited member of NATO.
US, six other nations pledge $20 billion to help Russia secure its weapons of mass destruction.
US official joins talks to end Sudan’s civil war.
Gen. Brent Scowcroft, chairman of Foreign Intelligence Advisory Board, warns an invasion of Iraq could destabilize the entire region.
German chancellor says he would not support US action in Iraq.
Iraq invites UN to hold talks on resuming inspections.
US and Russian officials remove uranium from a nuclear reactor in Yugoslavia.
Germany says it will not share evidence against Zacharias Moussaoui in a death penalty case.
Congress says it will hold hearings on action in Iraq.
