This winter For NPR News, I'm Catherine. Parents in Santa Barbara Iran says, it will never accept changes to the nuclear deal. As Peter Kenyon reports. Tehran's comments come in response to President, Trump's threat to reimpose sanctions if the agreement is not amended within four months, the Iranian foreign ministry released a statement saying to Ron won't agree to any changes in the 2015 Nuclear agreement. Either now or in the future. Foreign Minister Mohammad-Javad Zarif described Trump's demands Friday as a desperate attempt to undermine the deal drove agreed to keep waving American sanctions against Iran as the US promised to do when negotiating the agreement, But Trump is demanding major changes including making the restrictions on Iran's nuclear programme, permanent in the next one hundred twenty days. Tehran is vowing to retaliate if the US violates the deal. But it hasn't said how Peter Kenyon NPR News Istanbul. Chelsea Manning says, she will run for the US Senate from Maryland, the transgender former Army intelligence analyst, who was convicted in 2013 of leaking classified documents to WikiLeaks filed. If you see documents will run as a Democrat, Manning will challenge the state senior senator Democrat bank Harden. She spent more than six years of a thirty five year sentence in prison until President Obama, granted her clemency before he left office. You're listening to NPR News From Washington. Nearly 40 percent of students who entered college in 2003 could default on their student loans by 2020 three That's the finding of a new long-term in an analysis rather by the Brookings Institution, which looked at 20 years of federal data for two groups of student loan. Borrowers previously published data from the Department of Education. Only looked at three to five years of borrowing the Brookings report found four prophet. Students and African American students had the highest default rates. Legendary sports broadcaster Keith Jackson has died. He was eighty nine And Here's Tom Goldman reports Jackson broadcast, many sports. But he's known primarily as the voice of college football, Keith Jackson's catchphrases forever. We'll be part of college. Football. The Rose Bowl is the granddaddy of them all in 2013 Jackson told Fox Sports. His famous call of wool, Nelly came from his grandfather. A former in the deep south were Jackson grew up, nearly would do summer drops. Something or whatever, and and oftentimes your dear him say, well, Nelly wom Jackson called his first college football game as a student at Washington State in nineteen 52 his career in the sport lasted over fifty years. He survived by his wife of sixty three years Turey an in 2015 Jackson told the LA Times I want to be remembered is a good old boy who married a gorgeous lady. And we had a great life together Tunggal Vin NPR News Wall Street ended in positive territory. Friday. The second trading week of the new year retailers led the way after the government reported at report confirmed holiday shopping season was a strong one. I'm Janine Herbst NPR News in Washington.