How does any one know where is the "separatist area" where "Kiev-controlled"? They only settled more or less where is who - following the 2nd Minsk agreement.
In summer it was a chess-board of pockets. Moreover, on the maps published - one and same village was counted on maps as "our" or "enemy's" by both sides simultaneously! Because Kiev troops moved in hectic manner, private battalions moved where they wished, where and how separatists moved no one knows at all - and all sides lied! tall lies regarding what they "have just captured". Where they have defeated everyone flat out o)
There has never been one decent map to trust where is who throughout whole summer.
Proof - poor OSCE - based in a hotel in Donetsk - couldn't venture out to the crash site for days. They ventured, returned, began anew, being shelled, along the route, by hell knows who.
Malaysian team, originally based in Kiev, ventured to reach Donetsk 2 weeks after the catastrophe, settled in a hotel in Donetsk as well.
Likewise, they couldn't get to the crash site, even, accompanied by all separatist leaders, and Malaysians had "guarantees" from both sides, that all is fine and no one would touch them.
I read their memoirs in summer when they recalled a blast into a car in front of them on the road, and that they had to turn back to Donetsk, afraid to continue. That was a separatist car ahead of them, by the way, Malaysians were in the centre of a "procession" of vehicles. Tucked into the centre by separatists, for safety.
No one could drive there safely, be you a Kievan or a separatist, because there are different brands of each kind, each of own mind and command.