In July, Cheney said on Fox News that the deal would make the use of nuclear weapons more likely.

“What Obama has done has, in effect, sanctioned the acquisition by Iran of nuclear capability. And it can be a few years down the road. It doesn’t make any difference. It’s a matter of months until we’re going to see a situation where other people feel they have to defend themselves by acquiring their own capability,” he said. “And that will, in fact, I think put us closer to use — actual use of nuclear weapons than we’ve been at any time since Hiroshima and Nagasaki in World War II.”

Cheney will speak on Sept. 8 — just a week ahead of the Sept. 17 deadline for Congress to vote on the deal’s authorization.