A decade after the attacks of 9/11/01, America is still under threat. However, Russ Feingold believes the threat is not just from America's enemies -- it's from ourselves.
The former Democratic senator from Wisconsin is best-known for his work on campaign finance reform. He offers a road map for the next ten years in his new book, "While America Sleeps: A Wake-Up Call for the Post-9/11 Era."
Feingold said the U.S. is used to being an "island nation," but can't afford to think that way anymore.
"With the globalization of the economy, with the internet and all the things that happened, we'll never be able to sit here and wait for things to be done to us," he said. "My belief is we don't know enough about the rest of the world. We even mock our politicians if they know something about the rest of the world. (Republican presidential candidate Newt) Gingrich ran an ad attacking Romney for knowing French. I don't think it's a bad thing for somebody to be able to communicate overseas."
Feingold has stepped forward, responding to Gingrich's criticisms of the president's stance on national security, saying that if Republicans are elected he worries about national security.
"The Republican field is choosing only those things that talk about a foreign policy where they think they can hurt the president," Feingold said. "For example, they think somewhere in Iran, that's the way to go. But what about what he's done? The president has been terrific in terms of reaching out to the Islamic and Muslim world, through the Cairo speech, Indonesia, India, no more Osama Bin Laden, no more Al Awlaki, no more Qaddafi. And he's provided a better reputation for America around the world than I think almost any president. That's a good thing. And I think turning to a guy like Gingrich who is pretty hostile to the rest of world would be a terrible misstep and going backwards."
For more with Feingold on where he disagrees with the president and why, how the Tea Party has influenced Congress, and more, watch the video in the player above.