Rick Santorum: Obama apology for Koran burning is "unacceptable" President Obama should not have apologized for what U.S. officials say was the inadvertent burning of a pile of Korans at Bagram air base in Afghanistan, former senator Rick Santorum (R-Pa.) said Sunday. (Steve Pope/Getty Images) "This is unacceptable," Santorum said on ABC's "This Week." The idea that a mistake was made - clearly a mistake, which we should not have apologized for - it was a mistake. There was nothing deliberate.. . .Killing Americans in uniform is not a mistake. It was something that deliberate. Santorum was referring to the two U.S. service members who were allegedly shot by an Afghan security official last week in the wake of the incident. Santorum argued Sunday that Obama's apology to Afghan President Hamid Karzai "suggests that there is somehow blame" and that it "shows weakness" on the part of the United States. Say it's unfortunate, say that this is something that should not have been done. ... But to apologize for something that was not an intentional act is something that the president of the United States, in my opinion, should not have done," Santorum said, adding that apologizing "lends credibility that somehow or another that it was more than (an accident)."