NEW YORK – Back in 2013, when Kremlin critic Alexei Navalny was facing bogus criminal charges, I recalled when my great-grandfather, Soviet leader Nikita Khrushchev, compared Russia to a tub full of dough. “You put your hand down in it, down to the bottom,” and “when you first pull out your hand, a little hole remains.” But then, “before your very eyes,” the dough returns to its original state – a “spongy, puffy mass.” Navalny’s death in a remote Arctic penal colony more than a decade later........

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