Question: John Choon Yoo (born July 10, 1967) is a Korean-American attorney, law professor, and author, his best known for his opinions concerning the Geneva Conventions that attempted to legitimize the War on Terror by the United States,  is a metaphor of war referring to the international military campaign that was launched by the U.S. government after the September 11 attacks in the U.S. in what year?
Sentence (from "War on Terror"): <ref name="Schmitt/slogan"> </ref> U.S. president George W. Bush first used the term ""war on terrorism"" on 16 September 2001, and then ""war on terror"" a few days later in a formal speech to Congress.
Relevant evidence: No