Anchored by Jake Tapper, The Lead airs at 4 p.m. ET on CNN.
The latest news on the crisis in Ukraine, plus a look at the technology aiding in search for Flight 370.
By CNN Chief Washington Correspondent Jake Tapper
(CNN) – President Barack Obama called Gov. Chris Christie of New Jersey Wednesday afternoon as the Garden State Republican was walking into an event at Jose Marti Freshman Academy in Union City, New Jersey, sources tell CNN.