September 11th Attacks: A series of coordinated terrorist attacks on September 11, 2001, in which hijacked planes were flown into major landmarks in the United States including the World Trade Center towers in New York City.
War in Afghanistan: A military conflict that began in 2001, following the September 11th attacks. It aimed to remove the Taliban regime from power and destroy al-Qaeda terrorist networks operating in Afghanistan.
Iraq War: A military intervention initiated by the United States in 2003 with the goal of removing Saddam Hussein's regime from power and eliminating weapons of mass destruction (WMD) that were believed to be present in Iraq.