Updated

Charles Krauthammer said Monday on "Special Report with Bret Baier" that the U.S. government should respond to Ukraine's reported request for weapons, as it will deter Russia from continuing its aggression in the country.

Krauthammer, a syndicated columnist and Fox News contributor, said the U.S. could be a big help in diffusing the situation if it gave Ukraine military arms.

"Putin now is sitting on the frontier of the rest of Ukraine. Specially eastern Ukraine. He has to calculate, is it gonna be worth an invasion?" he said.

Krauthammer said by not fulfilling the reported request, the Obama administration is doing nothing to make Putin recalculate an invasion of the rest of Ukraine.

"We are not giving him anything to alter his calculation. and that's the scandal about our in action," said Krauthammer.