Mullin says US 'knew' Iran would try to attack American assets in UK

The United States knew Iran or its proxies were going to "try and do an attack, possibly on a United States asset in the [United Kingdom]," Secretary of Homeland Security Markwayne Mullin said Thursday of the arrest and release of five men near a Royal Air Force base used by the U.S.
Mullin told Fox News the U.S. "had already been watching" the situation with British officials and the U.S. was "giving them a heads up."
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