Terrorism expert and author Dr. Sebastian Gorka took on Larry Korb of the Center for American Progress over the Obama administration's policies on combating ISIS.

Sandra Smith asked Gorka what he thinks about Donald Trump calling Barack Obama and Hillary Clinton the "founders" of the Islamic State.

Gorka explained that Trump would be right to say that Obama and Clinton "facilitated" the rise of ISIS in the Middle East with their policies.

He said that ISIS now has more than 80,000 fighters and is "the most powerful jihadi insurgency the world has ever seen."

"In 2008 ... ISIS didn't exist. Al Qaeda in Iraq, the forerunner of ISIS, was one regional franchise inside Iraq. When we withdrew our troops, when we started to cook the books on intelligence, as you hear from CENTCOM analysts, then we facilitated the rise of ISIS," he said, also calling out Obama for drawing "false red lines" in Syria.

After doubling and tripling down on the statement, Trump then tweeted that it was "sarcasm."

Ratings challenged @CNN reports so seriously that I call President Obama (and Clinton) "the founder" of ISIS, & MVP. THEY DON'T GET SARCASM? — Donald J. Trump (@realDonaldTrump) August 12, 2016

Korb called out Trump for essentially making the same argument that Russia and Iran have made, suggesting the United States was involved in creating ISIS.

Gorka countered that Korb should look at the "facts on the ground," and pointed to the "outrageous" new reports of the Obama administration "cooking the books" to downplay the ISIS threat.

Watch the debate above.

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