Thousands of Iraqi forces entered Sadr City today, asserting government control over the vast district for the first time since the American invasion. Sadr City has been the stronghold of anti-American cleric, Muqtada Sadr, and while his forces did not fire a single shot today, they still remain fully armed. We'll speak with Ross Colvin, Baghdad bureau chief for Reuters.

Big money and partisanship are just some of the reasons why so little gets done on the avenue that connects the White House and Congress.

We speak with Sally Adee, associate editor of technology for IEEE Spectrum magazine, who writes about the "kill switch" threat to military computers and its implications for the future of warfare.

We speak with legendary musician Steve Winwood. He received an honorary doctorate from the Berklee College of Music and he has just released a new CD, "Nine Lives."