NY Times:

WASHINGTON — President Trump said on Monday that he was designating a powerful arm of the Iranian military as a foreign terrorist organization, the first time that the United States had named a part of another nation’s government as that level of threat and raising the risk of retaliation against American troops and intelligence officers.

The move, which has been debated at the highest levels within the administration, was imposed on the Islamic Revolutionary Guard Corps. The military unit has carried out operations across the Middle East, trained Arab Shiite militias and taken part in a wide range of businesses in Iran.

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