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.
In South Sudan, there are reports of mass graves and attacks on civilians as violence spreads throughout the country.
U.S. Marines continue to stand by in the region to help evacuate Americans caught in the middle of the chaos.
CNN's Elise Labott reports on the latest fears tensions between South Sudan's president and supporters of the former vice president could turn into a civil war.