In the days following the September 11 attacks, hawks in the Bush administration such as Wolfowitz argued for immediate military action against Iraq, but the issue was temporarily set aside in favor of planning the invasion of Afghanistan. Beginning in September 2002, the Bush administration mounted a campaign designed to win popular and congressional support for the invasion of Iraq. In October 2002, Congress approved the Iraq Resolution, authorizing the use of force against Iraq. While congressional Republicans almost unanimously supported the measure, congressional Democrats were split in roughly equal numbers between support and opposition to the resolution. Bowing to domestic and foreign pressure, Bush sought to win the approval of the United Nations before launching an attack on Iraq. Led by Powell, the administration won the November 2002 passage of United Nations Security Council Resolution 1441, which called on Iraq to dismantle its WMD program. Meanwhile, senior administration officials became increasingly convinced that Iraq did indeed possess WMDs and was likely to furnish those WMDs to al-Qaeda; CIA Director George Tenet assured Bush that it was a "slam dunk" that Iraq possessed a stockpile of WMDs.