LONDON - Mitt Romney said today that he is "not sure" who the advisers are who spoke anonymously to a British newspaper but said that he disagrees with their suggestion that Obama doesn't understand the relationship between the U.K. and the U.S.

"Well, first of all, I- I'm- I'm generally not enthusiastic about- adopting the comments made by people who are unnamed," Romney said in an interview with NBC News. "I have a lot of advisers."

"So I'm not sure who this person is. But I can tell you that we have a very special relationship between the United States and Great Britain," said Romney. "It goes back to our very beginnings- cultural and- and- historical."

Romney was greeted upon arriving in London earlier today by a story in The Telegraph newspaper that used quotes from two unnamed advisers who were critical of the president.

"We are part of an Anglo-Saxon heritage, and he feels that the special relationship is special," an adviser told the British paper of Romney. "The White House didn't fully appreciate the shared history we have."

But tonight, Romney said he did not agree with whoever was quoted in the paper.

"But I also believe the president understands that. So I- I don't agree with whoever that adviser might be," Romney told NBC. "But do agree that we have a very common bond between ourselves and Great Britain."

The piece in the Telegraph prompted a heated back and forth between the Romney and Obama campaigns, with Vice President Biden joining the fray and accusing Romney of "playing politics with international diplomacy."

Get more pure politics at ABC News.com/Politics and a lighter take on the news at OTUSNews.com