Related Program: Here and Now Trump Will Decertify The Iran Nuclear Deal. What Does That Mean? Related Program: Here and Now TweetShareGoogle+Email In this photo released by the official website of the office of the Iranian Presidency, Iran's President Hassan Rouhani speaks during a ceremony marking the beginning of new Iranian academic year at the Tehran University, in Tehran, Iran, Saturday, Oct. 7, 2017. Iran's president on Saturday defended the 2015 nuclear deal with world powers, saying not even 10 Donald Trumps can roll back its benefits to his country as President Trump appears to be stepping back from his campaign pledge to rip up the deal, instead aiming to take other measures against Iran. (Iranian Presidency Office via AP) Listen Listening... / President Trump is telling Congress that he won’t certify Iran’s compliance with the nuclear agreement, but he is also asking Congress to leave the agreement in place. Here & Now security analyst Jim Walsh (@DrJimWalshMIT) tells Here & Now‘s Robin Young that Trump’s move is largely symbolic.Copyright 2017 NPR. To see more, visit http://www.npr.org/. TweetShareGoogle+EmailView the discussion thread.