Writer Arianna Huffington, usually an Obama ally, joined in. She told "CBS This Morning": "Using the Osama bin Laden assassination, killing, the great news that we had a year ago, in order to say basically that Obama did it and Romney might not have done it ... to turn it into a campaign ad is one of the most despicable things you can do."
Like most former governors who run for president, Romney has scant foreign policy experience. He has said Obama is too faint-hearted in defending Israel and in warning Iran and North Korea about the potential consequences of their nuclear ambitions.
Democratic strategists say relatively few voters will base their November ballots on such claims.
While Obama was flying to Kabul Tuesday, Romney visited the lower Manhattan site where hijacked planes brought down the World Trade Center's towers in the 2001 terror attacks.
"It's totally appropriate for the president to express to the American people the view that he has that he had an important role in taking out Osama bin Laden," Romney said. "I think politicizing it and trying to draw a distinction between himself and myself was an inappropriate use of the very important event that brought America together."
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