In this Nov. 12, 2011, photo, Republican presidential candidate Former Pennsylvania Sen. Rick Santorum speaks at a debate in Spartanburg, S.C. The Republican presidential hopefuls are focusing on Iran as a weak spot in President Barack Obama?s foreign policy record, and they?re reviving many of the arguments that neoconservative proponents of armed intervention against Tehran lost in the latter years of George W. Bush?s presidency. Longshot candidate Santorum said there "isn?t going to be enough time" for tougher sanctions on Iran and more support for pro-democracy groups. He acknowledged the Obama administration?s possible involvement in some of the covert attacks on Iran?s nuclear program. (AP Photo/Richard Shiro)