The claim escalates already high tensions in the Gulf, where a fragile ceasefire has recently come under strain.

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In a Tuesday post on Truth Social, President Trump said Iran shot down a U.S. Apache helicopter patrolling the Strait of Hormuz and vowed that the U.S. "must" respond.

US President Donald Trump said Iran downed a sophisticated Apache helicopter. The incident occurred overnight while the aircraft patrolled the Strait of Hormuz. President Trump…