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Newt Gingrich believes that the speech Donald Trump gave today about ISIS and radical Islam was the "most important foreign policy speech since Ronald Reagan."

"He did just a remarkable job, in my judgment, of identifying the enemy, describing accurately how big the problem is," Gingrich said on "Hannity" tonight.

He added that Trump's speech drew a clear contrast between himself and Hillary Clinton, giving the American people "two totally different worldviews" to decide between in November.

"He took what may be the most important national security threat of the next decade, he outlined what the threat is, he outlined why we have failed, he outlined how important it is, and he began to lay the base for a very serious, very dramatic change," Gingrich said.

"This was truly a historic speech."

Watch more above, and let us know what you think in the comments.

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