Inside a Pro-Russian Checkpoint Blocking a Ukraine Military Base

April 25, 2014— -- Mostly pro-Russian volunteers have set up a checkpoint outside a military base in an attempt to prevent tanks from leaving - creating barricades from tires, sandbags and strings of barbed wire outside the Kramatorsk Airfield in Ukraine.

The checkpoint volunteers, who speak a Russian dialect and fly an independent flag, say they want to prevent tanks and armored vehicles from leaving the military base and hope that Russia will sent peace-keeping troops to the region.

Next to the checkpoint, they have set up a makeshift shelter wired with electricity.

A sign outside reads "NATO Nyet."