Aspects of Propaganda can be traced back since the founding of the United States, with its use being vital as casus bellis for wars such as the Spanish-American War of 1898, which led to the practice of yellow journalism, the Gulf of Tonkin incident which led to the Vietnam War, the Nayirah testimony prior to the Gulf War, and reports of Saddam Hussein's alleged shredder as well as the conjecture of WMD's in Iraq which was the main rationale behind the invasion in 2003.