Russia’s nuclear-capable Oreshnik missile system has entered active service, Russia’s Ministry of Defense said Tuesday, as negotiators continue to search for a breakthrough in peace talks to end Moscow’s war in Ukraine.Troops held a brief ceremony to mark the occasion in neighboring Belarus where the missiles have been deployed, the ministry said. It did not say how many missiles had been deployed or give any other details.Russian President Vladimir Putin said earlier in December that the Oreshnik would enter combat duty this month. He made the statement at a meeting with top Russian military officers, where he warned that Moscow...