The two men were pointed but polite, although at least once McCain sought to depict his rival as naive on foreign policy. That was in response to Obama's statement that it might become necessary to send U.S. troops across the Pakistani border to pursue terrorists.
"You don't say that out loud," retorted McCain. "If you have to do things, you do things."
He also criticized Obama for having said he would sit down without precondition with Iranian President Mahmoud Ahmadinejad.
"So let me get this right, we sit down with Ahmadinejad and he says 'we're going to wipe Israel off the face of the earth' and we say, 'no you're not.' Oh please," McCain said.