Is Russia America’s #1 geopolitical foe — and if not, who is?

Presidential candidate Mitt Romney recently called Russia "without question, our No. 1 geopolitical foe" while criticizing President Obama for remarks he made to Russia’s president about missile defense that were picked up by a live microphone.  

At the United Nations Security Council, "who is it that always stands up for the world’s worst actors?" Romney asked on CNN on Monday. "It is always Russia, typically with China alongside."

Russian President Dmitry Medvedev was unimpressed, telling reporters in Seoul that Romney’s remarks seemed to come out of the Cold War era and "smacked of Hollywood," the Associated Press reported.

The Times posed the question to several experts in international relations: Is Russia the "No. 1 geopolitical foe" of the United States? And if not, who is? Here’s what they said.

This article was originally published in Los Angeles Times.