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Explainer-Why does Russia want to capture the strategic Ukrainian city of Pokrovsk?
By Andrew Osborn and Anastasiia Malenko MOSCOW/KYIV (Reuters) -Russian forces are starting to encircle the strategically important eastern Ukrainian city of Pokrovsk after capturing a string of villages to its south, and Ukraine has halted production at its only coking coal mine nearby. Following are key facts about Pokrovsk, which Russians call by its Soviet-era…