Vadym Skibitskyi, Deputy Chief of the Defense Intelligence of Ukraine, suggests that Russia is preparing for an offensive in Kharkiv and Sumy regions in late May or early June. Russia doesn’t have enough strength to seize Kharkiv or Sumy, but “a quick operation to come in and come out” is possible, states Skibitskyi in his interview with The Economist. He says the timing of the offensive depends on the strength of Ukrainian defenses in the Donbas, but suggests that Russia’s main push will begin at the “end of May or beginning of June”. Skibitskyi says Russia has a total of 514,000 ground troop…