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In his Talking Points Memo tonight, Bill O'Reilly highlighted a blunder made by each presidential candidate at last night's commander-in-chief forum, which focused on national security.

O'Reilly criticized Donald Trump for "praising" Russian President Vladimir Putin.

"Certainly, in that system, he's been a leader, far more than our president has been a leader," Trump said. "If [Putin] says great things about me, I'm gonna say great things about him. I've already said he is really very much of a leader."

O'Reilly said that Trump's praise of Putin "legitimizes" a man who doesn't deserve that courtesy.

"Putin is a killer who has corrupted his country and who routinely violates international law," O'Reilly stated.

He said that Trump is speaking like this because he believes he can partner with the Russian leader and convince him to stop being such a villain, particularly when it comes to allying with the U.S. to fight ISIS.

As for Hillary Clinton, O'Reilly said she had her own significant blunder at the forum.

The Democratic nominee said she would combat ISIS with air power and regional alliances, taking U.S. ground troops off the table.

"I'm sure the ISIS savages were happy to hear that," O'Reilly said. "That means Secretary Clinton will essentially follow the Obama plan, which is the doctrine of  'acceptable losses,' allowing the ISIS savages to retain strongholds in Iraq and Syria while at the same time trying to limit their destruction all over the world."

"Big mistake, telling ISIS what you will or will not do to them."

Watch the full Talking Points Memo above, and let us know which candidate you think had the worse blunder in the comments.

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