Washington (AFP) – The Russian campaign to seize control of the Donbas region in eastern Ukraine is moving slowly and behind schedule, a Pentagon official said Friday. Stiff resistance from Ukrainian troops and caution after Russia’s failure to capture Kyiv has led to “slow and uneven progress” in Donbas, the official told reporters. “We believe that essentially what they’re doing is continuing to set conditions for a sustained and larger and longer offensive,” the official said. That includes a “doctrinal” approach of launching airstrikes and then artillery strikes at Ukraine positions, and o…