Former Speaker Newt Gingrich (R-Ga.) says the Brussels terrorist attacks are boosting Donald TrumpDonald John TrumpStates slashed 4,400 environmental agency jobs in past decade: study Biden hammers Trump over video of world leaders mocking him Iran building hidden arsenal of short-range ballistic missiles in Iraq: report MORE's credibility with voters in the U.S. presidential election.

“Well, tragically, I think that the attacks in many ways validated Donald Trump’s entire candidacy,” Gingrich told host Maria Bartiromo on Fox Business Network’s “Mornings with Maria" on Wednesday.

"One of his strengths is to read the obvious. He’s a bit like [former President] Reagan in that sense.

Gingrich cited Trump's controversial statements about Muslims and terrorism.

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“He looked out, he saw that many of the people who perpetrated the Paris atrocities, many of them had come from Brussels,” he added.

“He has business friends who go to and from the European Union in Brussels, and his business friends are saying to him, ‘it’s out of control.' So [Trump] says the obvious, [and] everybody else thinks he’s stupid because he’s the only one saying it. The fact is, Donald Trump was right.”

At least 34 people were killed and more than 200 others wounded in a string of coordinated terrorist attacks in Brussels on Tuesday.

The Islamic State in Iraq and Syria (ISIS) has claimed responsibility for the bloodshed, which targeted Brussels’s Zaventem airport and a metro station near EU buildings there.

The attacks quickly became an issue in the 2016 race after Trump said he would have closed the nation's borders if he was president.

Democratic front-runner Hillary ClintonHillary Diane Rodham ClintonThree legal scholars say Trump should be impeached; one thinks otherwise Report: Barr attorney can't provide evidence Trump was set up by DOJ Jayapal pushes back on Gaetz's questioning of impeachment witness donations to Democrats MORE criticized Trump's comments as "unrealistic." On Wednesday, the GOP hopeful said American Muslims should do more to report the "bad ones" to authorities.

Gingrich criticized Clinton on Wednesday, saying she didn't understand the public's fear of terrorism.

“You have Hillary Clinton, who was on a little while ago on videotape saying, ‘we shouldn’t have leaders who tell us to be afraid,’” he said. "Well, how do you watch Brussels and not have some sense of fear?

“I think she sounds almost like she’s in a fantasy world that doesn’t connect to reality," he continued. "Hillary Clinton was totally wrong. It makes you question her connectivity to the real world.”

Belgian authorities on Wednesday identified two of the suicide attackers, who were brothers, Ibrahim and Khalid El Bakraoui. A third attacker remains unidentified and at large.