Charles Krauthammer ripped President Obama's foreign policy Thursday on "Special Report with Bret Baier," blasting the president for holding a news conference at which he said, "we don't have a strategy yet" for dealing with ISIS in Syria.

"The president of the United States, in the middle of a real crisis, a few days after the beheading of an American...gets in front of the world and says, I don't have a strategy," the syndicated columnist and Fox News contributor said. "If that is true, don't say anything. Why do you announce you don't have a strategy?"

Krauthammer also criticized what he characterized as the president's lack of action as Russian forces appeared to encroach further into Ukrainian territory. Ukrainian President Petro Poroshenko said Thursday that thousands of Russian forces had "invaded" the country.

Obama addressed the tension in his news conference, but didn't refer to the movement as an "invasion."

"Obama said there's nothing new here, move along - as if the sending of a column of tanks, armored personnel carriers, and self-repelled artillery into Ukraine is not what it obviously is - it's an invasion," Krauthammer said.

"He basically said, we're going to do nothing, I'll wait until I chat with the allies next week," he added. "How about picking up the phone and talking with the allies? You know, the phone is a way to communicate rather rapidly."