Former Vice President Dick Cheney was on "Hannity" to discuss the threat of ISIS and the horrific beheading of American journalist James Foley.

“After watching this [beheading] video, I’m pretty convinced that we have a group of people at war with us. Would you agree with that?” Hannity asked.

“Absolutely,” Cheney said, calling ISIS “very much a threat to the United States” and to our friends and allies.

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While Cheney said the beheading of an American reporter is a terrible development, he cautioned, “Magnify that a million times over because that’s what’s in store for the rest of the world if we don’t deal effectively with this crisis.”

Hannity asked, “Do you think the president fully understands the danger of radical Islam and what do you think the danger is?”

“Well I think the danger’s enormous, I don’t think the president understands it,” he said, blasting Obama as ineffective.

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Cheney believes that people around the world view our commander-in-chief as weak.

“I am absolutely certain that someday there will be another mass casualty attack against the United States, except next time they will have far deadlier weapons.”

Watch more above.