Russia is still cutting deals with China, Iran, and North Korea to make sure they don’t run out of missiles and ammunition, but there’s one thing that they can’t import in any significant numbers. What they’re running short of are soldiers. Moscow doesn’t publish precise figures, but one recent estimate puts the Russian death toll in Ukraine at more than 70,000. Others suspect that the true figure is closer to 100,000. And then there are the tens of thousands who survived but were too grievously injured to return to combat. With the ranks thinning so badly, Vladimir Putin has launched...