By Simon Lewis and Max Hunder SLOVIANSK, Ukraine/KYIV (Reuters) – Russian forces struck targets across Ukraine’s eastern Donetsk region on Tuesday, a day after President Vladimir Putin declared victory in the neighbouring region of Luhansk after months of gruelling attritional warfare in which both sides lost many men. The strikes across Donetsk, reported by regional officials and Russia’s military, followed Moscow’s capture of Lysychansk on Sunday, the last bastion of Ukrainian resistance in Luhansk. Donetsk and Luhansk together make up the Donbas, the industrialised eastern part of Ukraine t…