Obama reaffirms Iraq commitment

Barack Obama, the president of the United States, has tried to calm fears that the final pullout of troops from Iraq at the end of December 2011 will cause a dangerous power vacuum.

In a joint press conference in Washington, Obama promised Nouri al Maliki, the Iraqi Prime Minister, that the United States would be a strong and enduring partner - and warned other nations not to interfere.

Al Jazeera's Patty Culhane reports from Washington, DC, the US capital.