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President Trump confirmed in a tweet Thursday that Iran has been "formally put on notice" after reports the country had tested ballistic missiles. Though Trump did not offer specifics on what being "on notice" entails, he did say Iran should "have been thankful for the terrible deal the U.S. made with them," referring to the deal former President Barack Obama reached with Iran in 2015 limiting its nuclear program:

National Security Adviser Michael Flynn had announced Wednesday that Trump would be putting Iran "on notice." A spokesman for the U.S. Central Command later clarified that it has "not been asked to change anything operationally" in the Middle East, and that the changes were "still at the policy level."