The world is a very complicated place and there are not always easy solutions to a lot of the problems out there," says John Brennan, a top Obama intelligence advisor and former senior CIA official who co-founded the Terrorist Threat Integration Center and the National Counterterrorism Center, a post-9/11 effort to integrate the US government's terror threat intelligence. "If you look at the world in black and white, you miss a lot of the subtleties out there. 'Either with us or against'—the world is not divided into good and evil a lot of time. Despite America's military might, a lot of these problems do not lend themselves to kinetic solutions"—i.e. the use of force. And world dynamics are likely to get more complicated and nuanced, not less, by 2025.
"It's time to update our national security strategy to stay one step ahead of the terrorists," Obama said at Indiana's Purdue University. "It's time to look ahead—at the dangers of today and tomorrow rather than those of yesterday.

He may be the most intelligent candidate we've ever had.