WASHINGTON (AP) — Russia has tapped a new Ukraine war commander to take centralized control of the next phase of battle after its costly failures in the opening campaign and carnage for Ukrainian civilians. U.S. officials don’t see one man making a difference in Moscow’s prospects. Russia turned to Gen. Alexander Dvornikov, 60, one of Russia’s most experienced military officers and — according to U.S. officials — a general with a record of brutality against civilians in Syria and other war theaters. Up to now, Russia had no central war commander on the ground. The general’s appointment was confirmed...