Face the Nation 2016 diary, January 15: Ted Cruz, Donald Trump battle at GOP debate

In the January 15 of the "Face the Nation" 2016 diary, John Dickerson discusses the latest GOP debate and the end of Donald Trump and Ted Cruz's "friendship of convenience"
In the January 15 of the "Face the Nation" 20... 04:13

Welcome to the "Face the Nation" 2016 diary - a recurring feature that will bring you the latest news and analysis on the 2016 election from CBS News political director and "Face the Nation" moderator John Dickerson.

In the January 15 entry, Dickerson discusses the latest GOP debate and the "public dissolution of the Donald Trump-Ted Cruz friendship of convenience."

Previous diary entries:

January 12: The State of the Union

January 11: Candidates campaign in South Carolina

January 8: Candidates head to GOP anti-poverty summit

January 6: Trump takes on Cruz's Canadian birth

January 5: Where to send candidates in the home stretch?