Your daily look at late-breaking news, upcoming events and the stories that will be talked about today:
1. CLINTON, SANDERS ENGAGE IN FIERCE DEBATE
The confrontation underscores their tightening primary race as the Iowa caucuses draw near.
2. WHICH U.S. DETAINEES IN IRAN ARE HEADED HOME
Reporter Jason Rezaian, former Marine Amir Hekmati and pastor Saeed Abedini are now in Germany, but Nosratollah Khosravi-Roodsari opts to stay in Iran. Matthew Trevithick is released separately.