Russia said on Monday that its forces had taken control of more territory in Ukraine's east-central region of Dnipropetrovsk, where the Kremlin said fighting was partly aimed at creating a "buffer zone.

Russia claimed Sunday that its forces are for the first time pushing into the central Ukrainian region of Dnipropetrovsk, an area it has been trying to reach for months, in a move that could create new problems for Kyiv’s much-stretched forces.

Russia claims Ukraine indefinitely postponed the release while Kyiv maintains it has been delayed until next week.