We are now seeing reports that the word “Peacekeeper” is being painted on the sides of Russian military vehicles near the Ukrainian boarder:

But there’s some frightening evidence that Moscow intends to invade mainland Ukraine.

“The probability of invasion is much, much higher than it has ever been,” James Miller, managing editor of The Interpreter, told War is Boring in an e-mail. The Interpreter translates media from the Russian press and blogosphere into English for use by analysts and policymakers.

The Russians reportedly have moved military vehicles with “peacekeeping” insignia to the border—a first since the crisis in the Ukraine began. Earlier this month, NATO warned that the Russians could mount an incursion into Ukrainian territory under the guise of a peacekeeping mission.

The Interpreter reports that it has found several pictures and a video showing Russian armored vehicles bearing the insignia “MC,” an abbreviation of the Russian words mirotvorcheskiye sily or “peacekeeping force.”

Given that the Ukranian military appears to be ramping up an already indiscriminate artillery barrage on Donetsk, it I would not be at all surprised seeing some sort of “peacekeeping” operation or “no fly zone” from the Kremlin.