Ronald Reagan was born to campaign: he loves it and does it well. Last week, in the twilight of his presidency, he was back to his specialty, this time amid the onion domes of Moscow. Strolling around Red Square, talking to priests, writers, students and refuseniks, toasting his hosts at gala dinners, the President was unmistakably campaigning -- primarily on behalf of American- style human rights but also, and somewhat confusingly, on behalf of his opposite number and sometime adversary, the General Secretary of the Soviet Communist Party.
Mikhail Gorbachev has never had to run for office, at least not in...