the first tim the state department acknowledged there was link between a $400 million cash payment to iran and the release of four american but the administration denies it. margaret brennan, our state departmentorrespondent, is with us tonight. margaret. >> reporter: scott, well, the administration now admits that they held on to the cash until it w clear that the the prisoners h left iran. but u.s. officials still deny that this was ransom becse the money was owed to iran as pt of a failedsrm deal 35 years ago. what we know is that a plane loaded with swi franks and euros took off from a geneva airpor january 17 the sameti the planes crisscrossed in the sky. today, the administratio admitted to the lefng because they said they wanted maxum leverage fearing iran would renege. many republicans s thas early aansom payment to a state snsor of terrorism, and, scott, th acce president obama of lying when h insisted just a few weeks ago that the u.s.oesn'y ranso >> pelley: allthis was a side deal to thelear agreement as well. on this aircraft, he has known nothg put war. hasome the new face of syria's civil war, which has claimed the lives of re than 400,000 people,1,000 of th