General Mills CEO Jeff Harmening talks food trends, breakfast cereals and sustainability.

Douglas Lute, U.S. ambassador to NATO during the Obama administration provides insights ahead of the NATO meeting.

Steve Huffman of Reddit says his team wrestles with the gray areas. "We debate these issues quite a bit."

"We really need to step up as companies," CEO Dan Schulman says.

"I think we are more listeners — I'm more of a listener. I lead very loosely, kind of from the side."

Makan Delrahim talks about the Justice Department's losing bid to block the AT&T-Time Warner merger, along with other antitrust cases.