The American war on terror began on September 11, 2001 with the attacks on the World Trade Center and Pentagon. In response, President Bush launched the war in Afghanistan to eliminate Al Qaeda and the Taliban. The U.S. later invaded Iraq in 2003 seeking to eliminate Saddam Hussein's weapons of mass destruction and spread democracy. After years of war with thousands of casualties and over a trillion dollars spent, support declined as Iraq showed little progress. The wars strained alliances and divided Americans on how to improve national security against emerging 21st century threats.