What is 2019–2021 Persian Gulf crisis?
{{Infobox military conflict | conflict = 2019–2021 Persian Gulf crisis | partof = the [[Iran–Saudi Arabia proxy conflict]] | image = {{Photomontage | photo1a = B52 in al udeid base may 2019.jpg | photo1b = Stena Impero 2019-07-21 02.jpg | photo2a = 1st Brigade, 25th Infantry Division, Task Force-Iraq at FOB Union III.jpg | photo2b = IMSC Bahrain Headquarters photo, November 24, 2019.jpg | photo3a = Carcasses of MQ-4C Triton 01.jpg | photo3b = Funeral of Qasem Soleimani, Tehran, Mehr 04.jpg | position = center | size = 300 | color = #F5F5F5 | border = 1 | color_border = white | spacing = 0 | foot_montage = }} | caption = '''Clockwise from top''': A U.S. [[Boeing B-52 Stratofortress|B-52H]] strategic bomber in [[Qatar]] in May 2019; A [[Navy of the Islamic Revolutionary Guard Corps|NEDSA]] boat patrolling near British-flagged tanker ''Stena Impero''; Members of the [[International Maritime Security Construct]] in [[Bahrain]]; Funeral procession of an Iranian general in [[Tehran]]; Alleged remnants of the U.S. [[Northrop Grumman RQ-4 Global Hawk]] drone [[2019 Iranian shoot-down of American drone|shot down]] by Iran; U.S. troops man positions during the attack on the [[Embassy of the United States, Baghdad|U.S. embassy in Baghdad]] | date = 5 May 2019 – 20 January 2021 | place = {{plainlist| * Western [[Indian Ocean]] * [[Persian Gulf]] * [[Gulf of Oman]] * [[Strait of Hormuz]] * [[Arabian Sea]] * [[Strait of Gibraltar]] * [[Red Sea]] * [[Iraq]] * [[Tehran]] }} | result = * Western military presence in Persian Gulf increased; formation of the American-led [[International Maritime Security Construct]] * Additional [[Sanctions against Iran|sanctions on Iran]] imposed * Assassination of the Iranian general [[Qasem Soleimani]] * Iranian withdrawal from the nuclear deal | combatant1 = '''{{flag|United States}}'''<br /> {{flagicon image|Seal of Combined Joint Task Force – Operation Inherent Resolve.svg|size=15px|border=}} '''[[Combined Joint Task Force – Operation Inherent Resolve|CJTF–OIR]]''' {{Collapsible list |title