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NO ONE outside the inner precincts of Iran's power structure knows who won that country's presidential election Friday. It's possible that a majority voted to reelect Mahmoud Ahmadinejad, as he claims. It's also possible, as much of his opposition fervently believes, that the election was stolen. What we can say for certain is that the election was neither free nor fair. When a regime peremptorily chooses which candidates can run; shutters newspapers, Web sites and television bureaus; silences text messaging; and throws critics into prison -- such a regime should not expect its pronouncements on election results to garner any respect.

So, as a first step, the Obama administration should take care not to signal more respect for those results than they merit. Administration...