Anchored by Jake Tapper, The Lead airs at 4 p.m. ET on CNN.
We've moved! Come join us at our new show page.
Just what does the U.S. have on Syrian President Bashar al-Assad? Was he personally behind a chemical attack?
Late Thursday afternoon, senior officials in the Obama administration will brief congressional leaders on the situation in Syria. The administration has repeatedly claimed it is certain that Assad's regime used chemical weapons on its own people.
CNN's Pentagon correspondent Barbara Starr reports, giving a preview of what Congress will hear.