TEHRAN — They’re calling it the “green tsunami,” a transformative wave unfurling down the broad avenues of the Iranian capital. Call it what you will, but the city is agog at the campaign of Mir Hussein Moussavi, the reformist candidate seeking to unseat President Mahmoud Ahmadinejad in the 10th post-revolution election. Iran, its internal fissures exposed as never before, is teetering again on the brink of change. For months now, I’ve been urging another look at Iran, beyond dangerous demonization of it as a totalitarian state. Seldom has the country looked less like one than in these giddy June days.