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.
Home front during World War II The home front covers the activities of the civilians in a nation at war. World War II was a total war; homeland production became even more invaluable to both the Allied and Axis powers. Life on the home front during World War II was a significant part of the war effort for all participants and had a major impact on the outcome of the war. Governments became involved with new issues such as rationing, manpower allocation, home defense, evacuation in the face of air raids, and response to occupation by an enemy power. The morale and psychology of the people responded to leadership and propaganda. Typically women were mobilized to an unprecedented degree.