The Trump administration has certified Iran's compliance with the nuclear deal and extended sanctions relief, per the AP. The State Dept say a further review is underway which "will evaluate whether continuing to lift sanctions would be in U.S. national security interests."
Why it matters: President Trump has repeatedly attacked the deal as one of the worst ever struck in history, though he did say during the campaign that once such a deal was reached, it had to be followed. This will upset many conservatives, though, who want to rip up the deal.