As far as I can gather - they were the escort of the humanitarian aid convoy. You can hardly call that an invasion force. 
Or did anyone expect that the convoy would have been sent in without cover, when West-Ukrainians make a sport of hunting on civilian buses and cars? Convoy protection is a standard practice in all hot spots.
Or did anyone expect that the convoy would have been sent in without cover, when West-Ukrainians make a sport of hunting on civilian buses and cars? Convoy protection is a standard practice in all hot spots.
ROFL
dude i guess you didn't check this with your boss Putin because he thinks they were patrolling the border and just got lost
P.S. it never fails to amaze me to which lengths kremlinbots will go to defend russia's side. army unit in a different country without acknowledgement and agreement of that country IS AN INVASION. this is pure definitions we're talking about. or do you think that if china will send chinese soldiers 100 after 100 into russia it will not be immediately thought of as an invasion? you can't be that stupid right?