Reuters has reported that Russia has now amassed 15,000 troops along the Ukrainian border, according to information supplied by a U.S. ambassador to NATO.

EuroMaidan offered this photograph from the scene:

The Wire has translated this tweet:

"A column of BTP at the border of Ukraine. The third column in the last hour. They are driving from Dagestan and Stavropol. Road Don 4."

The Wire has created this map of the likely path the Russian troops are taking, based on the information offered by EuroMaidan:

Created using Google Maps Engine.

Reports on social media indicate the tanks are already in the Rostov region of Russian. 

 

This Instagram from @Dinupsik reads in English, "My mom is driving to meet me. Rostov highway. #rostov #BTR #tanks #scary."

The Rostov region of Russia stretches across the east Ukrainian border of Russia, and is about 256 kilometers from Donetsk: 

We will update this story as more information becomes available.