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) – Russia began large-scale air defense drills 280 miles east from its border with Ukraine Thursday, according to Russian state news.
But White House deputy national security adviser Ben Rhodes downplayed the surprise military exercises in an interview with CNN's "The Lead with Jake Tapper."