Ambinder analyzes:

Not only is Sen. Joe Lieberman going to lead the Senate's attempt to repeal Don't Ask, Don't Tell, but the White House asked him to do it. Why, oh why, would the White House reward the man whose health care dithering they came to hate?  Simple: this works for everyone. Lieberman can work on Republicans he respects, like  Sen. Lindsay Graham, he can regain some credibility with liberals (I said some credibility), he actually does believe that DADT should be repealed, and he now owes the White House a favor.

Meep meep.