What is War on Terror?
{{Infobox military conflict|main | conflict = War on terror | image = {{Photomontage | photo1a = War on Terror montage1.png |alt1a='''Clockwise from top left:''' [[September 11 attacks|Aftermath of the September 11 attacks]]; U.S. servicemen boarding an aircraft at [[Bagram Airfield]], [[Islamic Republic of Afghanistan|Afghanistan]]; an American soldier and Afghan interpreter in [[Zabul Province]], Afghanistan; explosion of a car bomb in [[Baghdad]] | photo2a = Major military operations of the War on Terror.svg | size = 300 | color_border = #F8F9FA}} | caption = '''Photographs, clockwise from top left:''' [[September 11 attacks|Aftermath of the September 11 attacks]]; U.S. servicemen boarding an aircraft at [[Bagram Air Base]], [[Islamic Republic of Afghanistan|Afghanistan]]; a U.S. soldier and Afghan interpreter in [[Zabul Province]], Afghanistan; explosion of an Iraqi car bomb in [[Baghdad]].<br />'''Map''': Countries with major military operations of the war on terror. | date = '''Main phase:''' [[Authorization for Use of Military Force Against Terrorists|14 September 2001]]<ref>{{cite news |url=https://abcnews.go.com/Archives/video/sept-15-2001-president-declares-war-terror-10877347 |title=Video: Pres. Bush Declares War on Terror |date=September 15, 2001|work=[[ABC News]] archives}}</ref> – [[2020–2021 US troop withdrawal from Afghanistan|30 August 2021]]{{refn|The war on terror was also officially declared over in May 2010 and again in May 2013|group=note}}<br /> ({{Age in years, months, weeks and days|month1=9|day1=14|year1=2001|month2=8|day2=30|year2=2021}}){{refn|Origins date back to the 1980s.|group=note}} | place = Global | cause = [[September 11 attacks]] | status = Ongoing; major wars ended | combatant1 = '''Main countries:'''{{unbulleted list | {{flag|United States}} | {{flag|United Kingdom}} | {{flag|France}} | {{flag|Canada}} | {{flag|Australia}} | {{flag|Germany}} | {{flag|Italy}} | {{flag|Spain}} | {{flag|Poland}} | {{flag|Turkey}} | {{fl