These are not Ukrainian borne Russian separatists. These are professional Russian soldiers.
Basically, it's a full on invasion, and it has just begun.
Although this theory is very much possible, any evidence for that? Or you have a gut feeling? Or you believe US Secretary of State, because it is wideknown that he cannot tell a lie? This is my problem with this topic: people are stating their opinions on all sorts of things and present it as facts.
This is why Russians on this topic feel like you guys are taking side.
The turmoil is, and it is highly likely, supported by Russia. But claiming that Russian professional soldiers are on the ground in Ukraine... I would REALLY like to see evidence for this shit.
I know when shit hit the fan here in Balkans, no one needed to bring any soldiers from across the border to start shit. War in Croatia was started by Serbs already living there, Bosnia also, this almost happened in Monteblack in spanish. There was no need to bring soldiers from abroad. It is possible that the situation is similar in Easter Ukraine.