Mark Steyn lays out a compelling explanation of why we have to prevent Iran from getting nuclear weapons.
But it doesn't have to come to that. Go back to that Argentine bombing. It was, in fact, the second major Iranian-sponsored attack in Buenos Aires. The year before, 1993, a Hezbollah suicide bomber killed 29 people and injured hundreds more in an attack on the Israeli Embassy. In the case of the community center bombing, the killer had flown from Lebanon a few days earlier and entered Latin America through the porous tri-border region of Argentina, Brazil, and Paraguay. Suppose Iran had had a "dirty nuke" shipped to Hezbollah, or even the full-blown thing: Would it have been any less easy to get it into the country? And, if a significant chunk of downtown Buenos Aires were rendered uninhabitable, what would the Argentine government do? Iran can project itself to South America effortlessly, but Argentina can't project itself to the Middle East at all. It can't nuke Tehran, and it can't attack Iran in conventional ways.
So any retaliation would be down to others. Would Washington act? It depends how clear the fingerprints were. If the links back to the mullahs were just a teensy-weensy bit tenuous and murky, how eager would the U.S. be to reciprocate? Bush and Rumsfeld might--but an administration of a more Clinto-Powellite bent? How much pressure would there be for investigations under U.N. auspices? Perhaps Hans Blix could come out of retirement, and we could have a six-month dance through Security-Council coalition-building, with the secretary of state making a last-minute flight to Khartoum to try to persuade Sudan to switch its vote.
Perhaps it's unduly pessimistic to write the civilized world automatically into what Osama bin Laden called the "weak horse" role (Islam being the "strong horse"). But, if you were an Iranian "moderate" and you'd watched the West's reaction to the embassy seizure and the Rushdie murders and Hezbollah terrorism, wouldn't you be thinking along those lines? I don't suppose Buenos Aires Jews expect to have their institutions nuked any more than 12 years ago they expected to be blown up in their own city by Iranian-backed suicide bombers. Nukes have gone freelance, and there's nothing much we can do about that, and sooner or later we'll see the consequences--in Vancouver or Rotterdam, Glasgow or Atlanta. But, that being so, we owe it to ourselves to take the minimal precautionary step of ending the one regime whose political establishment is explicitly pledged to the nuclear annihilation of neighboring states.
Lots more, all good.