Say this for Newt Gingrich: He's not afraid to sound off with big ideas. It's given him a reputation as one of the deeper thinkers in politics. Problem is, when it comes to defense and foreign policy, the current GOP presidential frontrunner's big ideas are often crazy.

Some of Gingrich's notions sounded kinda-sorta good at the time (don't sweat independent terror groups), only to be revealed later as wrong-headed. Others (lasers vs. North Korea) were face-palmers from the start. But now that Gingrich is once again a major national figure, it's time to take a new look at Newtisms that could translate into Pentagon plans.

Here's a guide to Newt's Contract With Planet Earth.