Erin Burnett Outfront

New York Times: Emails show Mulvaney's key role in halting Ukraine aid; White House confirmed Trump-Putin call one day after Kremlin revealed it; Putin invites Trump to visit Moscow in May in Sunday call; New York Times: Trump's top advisers failed to convince him to release aid during previously undisclosed meeting; New York stabbing suspect charged with federal hate crimes; At least 11 anti-Semitic incidents reported in New York in December; Biden fires back at Buttigieg over "judgement" on Iraq vote: "I put my foreign police record against anybody"; Biden says he'd consider a Republican running made but "I can't think of one right now"; Successes, tensions follow Buttigieg as he ends mayoral term; Joe Biden's favorite phrase: "Come on, man!" via Knit