12 November 2014 Last updated at 09:17 ET
Ukraine crisis: Russian troops crossed border, Nato says
A column of unidentified tanks was seen on a road near the rebel-held town of Shakhtarsk on Monday
[they appear to be Russian T90's -presence]
Nato has seen columns of Russian military equipment and Russian combat troops entering Ukraine this week, its top commander said.
"Russian tanks, Russian artillery, Russian air defence systems and Russian combat troops" were sighted, US Gen Philip Breedlove said in Bulgaria.