The US Is 'Officially Putting Iran on Notice'

President Trump's national security adviser said the US is "officially putting Iran on notice," without specifying exactly what that means, Reuters reports. According to NBC News, Michael Flynn made the remark during a "surprise appearance" at a White House press briefing Wednesday. It was spurred by a recent Iranian missile test that Flynn characterized as "destabilizing activity." While Flynn didn't offer specifics on how the US may respond, three senior administration officials tell CNN they are "considering a whole range of options," including everything from economic sanctions to military action.

Iran's defense minister says the test doesn't violate the nuclear agreement or a UN resolution. Iran has tested multiple missiles since the nuclear deal in 2015. It says they are "solely for defensive purposes" and not designed to carry nuclear warheads. Trump promised during the campaign to end Iran's missile program. The National Iranian American Council called Flynn's remarks "reckless" and said they may set the US on the path to war. (More Iran stories.)