“He acts like he thinks the Cold War is still on, Russia is still our major adversary. I don’t know where he has been,” Biden shot back during a Sunday interview on the CBS current affairs program “Face the Nation.”

“This is not 1956,” Biden added. “We have disagreements with Russia, but they’re united with us on Iran. One of only two ways we’re getting material into Afghanistan to our troops is through Russia … if there is an oil shutdown in any way in the Gulf, they’ll consider increasing oil supplies to Europe.”

Meanwhile, Clinton told CNN that Romney needed to be more realistic about U.S.-Russian relations.

“I think it’s somewhat dated to be looking backwards instead of being realistic about where we agree, where we don’t agree,” she said in an interview during a visit to Turkey.

The Romney campaign quickly jumped to their candidate’s defense.