Russia’s brutal war on Ukraine is now being led by a ruthless commander known by his troops as “General Armageddon.” The Kremlin appointed Gen. Sergey Surovikin, 56, as overall commander of Russia’s joint group of forces in its so-called “special military operation” on Saturday. Just two days later, more than 80 long-range missiles rained down across Ukraine — including one just feet from a kids’ playground — in the most dramatic escalation since the invasion nearly eight months ago. “I am not surprised to see what happened … Surovikin is absolutely ruthless, with little regard for human life,” a former...