MOSCOW — "Russia is like a tub full of dough. You push your hand all the way to the bottom, pull it out, and right before your eyes, the hole disappears, and again, it is a tub full of dough," Nikita Khrushchev once said, assessing the country he ruled. The former premier -- my great grandfather -- who 60 years ago denounced Joseph Stalin and his pervasive security apparatus, must be turning in his grave. Russia's legal institutions are still run along the lines of Stalin's "show trials." Following the politically motivated prosecutions of former Yukos CEO Mikhail Khodorkovsky and...