The Pentagon deployed more B-52H bombers to the Middle East in another demonstration of the U.S. military commitment to the region, according to a U.S. defense official.
Two bombers flew a 36-hour, nonstop mission from Minot Air Base in North Dakota to the Arabian Gulf and back.
The temporary deployment is the fourth in the last two months and the first bomber mission of 2021.
The mission helps to "demonstrate the U.S. military's continuing commitment to regional security and deterrence to aggression," the U.S. Defense official told Fox News.
The bomber, also known as the Stratofortress, is a long-range heavy bomber that can fly at subsonic speeds.
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Two bombers last flew through the region just before New Year’s Day, following the same nonstop route, the Air Force Times reported.
During that previous flight, Iran said President Trump "will bear full responsibility for any adventurism" in the final weeks of his administration.
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The U.S. has deployed the missions in response to a series of actions taken by Iran, most notably a rocket attack on the U.S. Embassy in Baghdad on Dec. 20.
About nine of the rockets landed on the embassy compound.