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British Prime Minister David Cameron describes his relationship with President Obama

By Ronnie Polidoro and Jessica Hopper
Rock Center

President Barack Obama marked the second day of British Prime Minister David Cameron's visit to the United States today with an official welcoming ceremony for the prime minister and his wife, Samantha Cameron, in the White House garden.

Incorporating some British-speak into his speech, President Obama told Cameron, "We are chuffed to bits that you are here." 

The president went on to say, "I'm confident that together we're going to keep the relationship between our two great nations, absolutely top notch."


AP

Just before Cameron left the United Kingdom, Brian Williams sat down with the prime minister for a Rock Center exclusive interview airing tonight at 10pm/9c.  Cameron tells Brian Williams that he has a very close and "easy" relationship with President Barack Obama.

"We call each other by our first names.  We talk probably, once a fortnight, once every three weeks, but it depends on how many issues there are that we really need to get to grips with," the prime minister told Brian Williams at his official residence in London.

Editor's Note: Click here to watch Brian Williams' full report, "The Man at No. 10," which aired on Rock Center with Brian Williams.