Alan Dershowitz said President Trump has more credibility when it comes to North Korea than his predecessor did.

The liberal Harvard law professor noted how he hoped Trump isn’t doing what President Obama did with Syria when he failed to follow through after drawing a red line.

"I think that probably at this point President Trump has more credibility," Dershowitz said on "Fox & Friends" Saturday.

Many lawmakers have expressed frustration over Trump’s rhetoric regarding North Korea, but the professor said it would be a mistake for Congress to interfere and try to pass legislation to block Trump from taking military action against Pyongyang if necessary.

"That actually blunts any presidential impact and I think it interferes with the president's right as commander in chief to make decisions affecting the national security of the United States,” he said. “I think we ought to take a deep breath and wait and see how it plays out.”

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Last week Trump said North Korea would be met with “fire and fury like the world has never seen” should they continue their provocations.

He then threatened that U.S. military solutions are ready to respond.

“Military solutions are now fully in place, locked and loaded, should North Korea act unwisely. Hopefully Kim Jong Un will find another path!” he tweeted Friday.

But some lawmakers have taken issue with the president’s tough talk.

House Minority Leader Nancy Pelosi said his “recent comments are recklessly belligerent and demonstrate a grave lack of appreciation for the severity of the North Korea nuclear situation.”

“Isolating the North Koreans has not halted their pursuit of nuclear weapons," Democratic Sen. Dianne Feinstein said. "And President Trump is not helping the situation with his bombastic comments.”

Some Republicans have also joined Democrats in criticizing Trump’s rhetoric.

Sen. John McCain, for example, said he “take[s] exception to the president's comments because you gotta be able to do what you say you're gonna do.”