The advisory was posted on Twitter on Sunday night. The US has long advised its citizens against travel to Iraq, but the renewed warning followed Washington's deployment of the aircraft carrier USS Abraham Lincoln and B-52 bombers to the Persian Gulf in response to unspecified "threats" by Iran.
The U.S. Embassy in Baghdad advises all U.S. citizens of heightened tensions in Iraq and the requirement to remain vigilant. Additional information can be found on the U.S. Embassy website at U.S. Citizen Services.https://t.co/zYvVmAqIA3— U.S. Embassy Baghdad (@USEmbBaghdad) May 12, 2019
The warning follows a surprise visit to Baghdad by US Secretary of State Mike Pompeo last week which he said was aimed at demonstrating US support for the Iraqi government, as the US says it has been picking up intelligence that Iran is threatening American interests in the Middle East.
During his visit, Pompeo also said he wanted to underscore Iraq's need to protect Americans in the country.
Tensions between the US and Iran have rocketed since President Donald Trump pulled his country out of the 2015 nuclear treaty with Iran and re-imposed severe sanctions on Iran's energy and finance sectors.
The strain has tested Iraq's leaders as they try to balance relations between the two rivals. Iraq sees billions of dollars in cross-border trade with Iran and has close ties with Tehran after it stepped in to fill the political vacuum following the 2003 US invasion.
But Iraq is also host to more than 5,000 U.S. servicemen and women invited by the Iraqi parliament in 2014 to assist in the war against the Islamic State group.