18:00Six O'Clock News16/01/2016 Iran deal due to be announcedBBC Radio 4 Duration: 15 minutes Sat 16th Jan 2016, 18:00 on BBC Radio 4 FMAvailable for over a yearListen nowIran and the United States have begun trading prisoners, as diplomats prepare to lift sanctions against Tehran.GenresNewsFormatsBulletinsBrandSix O'Clock News Source: BBC Online