Obama Says He's Willing to Walk Away From 'Bad Deal' With Iran

President Barack Obama said he's willing to walk away from a bad nuclear deal with Iran, hours after talks were extended another week.

"I've said from the start I will walk away from the negotiations if in fact it's a bad deal," Obama said during a joint press briefing with Brazil President Dilma Rousseff at the White House on Tuesday.

"If the inspections regime, verifications regime is inadequate, then we're not going to get a deal and we've been very clear to the Iranian government about that," Obama continued.

Obama said said the P5+1 partners were also willing to reject a bad deal and added the deal is not a matter of trusting Iran because there will be strong verification in place.

"Given past behavior on the part of Iran, that can't simply be a declaration by Iran and a few inspectors wandering around every once in a while," Obama said. "That's going to have to be a serious, rigorous verification mechanism. And that, I think, is going to be the test as to whether we get a deal or not."

“If we can’t verify that, if the inspections regime is inadequate, then we’re not going to get a deal,” he said.

The United States is partnering with Britain, France, Russia, China and Germany in negotiating a deal with Iran.

Obama further addressed Americans being held captive Iran, saying it is a separate matter from the nuclear talks.

"With respect to U.S. citizens who were held in Iran, this is something that we continue to push hard on, irrespective of the nuclear deal," Obama said. "It's a top priority for us to make sure that our people are treated fairly."