With word of a snag in the Iran nuclear talks, Eurasia Group President Ian Bremmer said Friday that the U.S. and five other world powers in the discussions are in a damned-if-you-do, damned-if-you-don't situation.

Reaching a deal to constrain Iran's nuclear capabilities is problematic, as is the alternative of the talks' falling apart, he said. "Which of my eyes do you want to poke me in?"