2021 U.S.–Iran naval incident 2019–2021 Persian Gulf crisis#Timeline 2016 U.S.–Iran naval incident 2004 Iranian seizure of Royal Navy personnel 2007 Iranian arrest of Royal Navy personnel 2008 U.S.–Iranian naval dispute 2011–12 Strait of Hormuz dispute 2019 Persian Gulf crisis July 2021 Gulf of Oman incident August 2021 Gulf of Oman incident