Hillary Clinton Corrects Flub, Thanks to Supreme Court Justice Breyer

The justice is a "careful listener," she says.

Following an exclusive interview with ABC’s George Stephanopoulos on "This Week" Sunday morning, the Democratic presidential frontrunner delivered the keynote address at the Brookings Institution’s Saban Forum 2015.

While responding to a question about comments she made about keeping military action against Iran on the table should they violate the terms of the nuclear agreement, which Clinton said "is not perfect," she warned: "What I said and what I mean is that there will have to be consequences for any violation by Iran and that the nuclear option should not at all be taken off the table. That has been my position consistently."

The crowd erupted into gasps and chatter regarding what appeared to be Clinton suggesting a nuclear weapon could be used against Iran if they fail to comply. Moments later, a lone, muffled voice rose from the front row with a loud, but inaudible, interjection.

"What? The military option," Clinton said, correcting herself.

"He's a careful listener, that Justice Breyer -- we like that about him," Clinton said with a chuckle.