Ukraine 7/15: Russian Air Support?

Are the Russians providing air support of the rebels?

At least six Ukrainian soldiers were killed in renewed attacks on government military posts and checkpoints by pro-Moscow separatists near the border with Russia, the Ukrainian military said on Tuesday.

There were also reports of an air strike killing four civilians in the small town of Snizhne, for which Kiev denied responsibility and appeared to point a finger at Russia - two days after Moscow threatened retaliation for the death of man when a shell landed on the Russian side of the border.

"Today at 7 a.m. (0400 GMT) an unknown plane carried out a bombing attack on Snizhne. The flight can be described only as a cynical provocation," Andriy Lysenko, a spokesman for Ukraine's National Defence and Security Council, told reporters.

His remarks appeared to be an accusation against Russia, since the rebels have not used aircraft in the conflict.