Anchored by Jake Tapper, The Lead airs at 4 p.m. ET on CNN.
What's the U.S. plan on Russia's "all out" invasion? Plus, a look at the strategy for fighting ISIS.
(CNN) – The U.S. Navy has provided two underwater assets to the search for Flight 370, the Towed Pinger Locator and the Bluefin-21. But what else could the U.S. provide in the underwater search if asked?
U.S. Navy deputy director for salvage and diving Mike Dean joins CNN to discuss.