Which war in 2001 is subjectively deemed a world war?
War on Terror The War on Terror (WoT), also known as the Global War on Terrorism (GWOT), 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 2001.  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. In the latter speech, George Bush stated, "Our enemy is a radical network of terrorists and every government that supports them." The term was originally used with a particular focus on countries associated with al-Qaeda. The term was immediately criticised by such people as Richard B. Myers, chairman of the Joint Chiefs of Staff, and more nuanced ones subsequently came to be used by the Bush administration to publicly define the international campaign led by the U.S.; it was never used as a formal designation of U.S. operations in internal government documentation.
1910s The 1910s (pronounced "nineteen-tens", also abbreviated as the "teens") was a decade of the Gregorian calendar that began on January 1, 1910, and ended on December 31, 1919. The 1910s represented the culmination of European militarism which had its beginnings during the second half of the 19th century. The conservative lifestyles during the first half of the decade, as well as the legacy of military alliances, was forever changed by the assassination, on June 28, 1914, of Archduke Franz Ferdinand, the heir presumptive to the Austro-Hungarian throne. The murder triggered a chain of events in which, within 33 days, World War I broke out in Europe on August 1, 1914. The conflict dragged on until a truce was declared on November 11, 1918, leading to the controversial, one-sided Treaty of Versailles, which was signed on June 28, 1919.