Secretary of State Marco Rubio said this week that there's been "some progress" in current negotiations with Iran. But both sides exchanged fire this week, so what gives?Today, host Scott Detrow steps in for Mary Louise Kelly. He speaks with NPR International Correspondent Aya Batrawy and NPR Pentagon correspondent Tom Bowman about whether these diplomatic efforts can finally break the impasse between the two countries, and why a nuclear deal with Iran feels like déjà vu.  Email the show at sourcesandmethods@npr.orgNPR+ supporters hear every episode without sponsor messages and unlock access to our complete archive. Sign up at plus.npr.org.