Anchored by Jake Tapper, The Lead airs at 4 p.m. ET on CNN.
The latest on national protests. Plus, what went wrong in Yemen rescue attempt?
(CNN) – If there was an incident on missing Malaysia Airlines Flight 370 which led to an accident, sabotage, or an act of terrorism, the U.S. government "needs to know who, why, and how," says former U.S. Acting and Deputy Attorney General George Terwilliger.