npr- Steve Inskeep talks to Iran's ambassador to the U.N. Gholamali Khoshroo, who says the nuclear deal his country signed cannot be renegotiated, despite President Trump's call for changes. STEVE INSKEEP, HOST: Iran says it's keeping its nuclear deal with the U.S. and other powers, and it expects the United States to live up to that deal, too....

[caption id="attachment_141124" align="alignright" width="191"] U.S. President Barack Obama answers a question after his end of the year press conference in the briefing room of the White House in Washington, December 19, 2014.CREDIT: REUTERS/LARRY DOWNING[/caption] (Reuters) -Irancould become a "very successful regional power" if Tehran agrees to ...