Barack Obama will blame America’s economic and foreign policy problems on “a broken politics in Washington and the failed presidency of George W. Bush” when he accepts the Democratic presidential nomination Thursday night.

Just three years after Hurricane Katrina, New Orleans confronts a new threat from Gustav and a stark question: Will the partially rebuilt levees hold?

A former Marine accused of killing unarmed Iraqi detainees has been acquitted of voluntary manslaughter in a first-of-its-kind federal trial.

The economy pulled out of a dangerous rough patch in the spring, thanks largely to strong exports, but the rebound isn't expected to last.

Will these nights simply be a page in the history of America or the start of a completely new chapter?  NBC Political Director Chuck Todd previews Obama's acceptance speech.