President Trump is withdrawing the U.S. from the Joint Comprehensive Plan of Action. Most call it the Iran Nuclear Deal, struck in 2015.
Iranian President Hassan Rouhani reacted to the move by declaring his country will try to keep what's left of the nuclear accord intact. He's ordered his foreign minister to start negotiating with the five other nations that signed the accord.
The other parties still in the deal have condemned the action by the U.S. Democrats aren't happy about it. President Barack Obama took to Facebook to complain about it.
But, political conjecture aside, what does it mean? Deputy Director Robert Murrett from the Institute for National Security and Counterterrorism at Syracuse University explains it.