Deal weakens Iran's hard-liners and strengthens US interests

Some, particularly Israeli Prime Minister Benjamin Netanyahu, have warned that the interim deal increases Iran鈥檚 chances of building nuclear weapons. They鈥檙e wrong. With this deal in place, it will be much harder for hard-liners in Iran to argue that Iran should tear up its agreements and build a bomb.

Until now, many in Iran, including supreme leader Ayatollah Ali Khamenei, believed the nuclear issue was just a pretext for a US overthrow of the Islamic regime. To them, the tightening of sanctions and repeated threats of military force are key reasons why Iran needs a nuclear bomb.

This deal undermines their arguments and constrains their options. For one, the deal greatly reduces the sense of an imminent military threat 鈥� taking away a critical element of the bomb advocates鈥� argument. It would also roll back one of the hard-liners鈥� important victories 鈥� the buildup of a stock of 20 percent enriched uranium that could cut the time needed to make a bomb.

If the sides eventually manage to reach a comprehensive agreement, the restraints and verification measures included in that deal would make it very difficult for Iran to race to the bomb without being detected in time for the international community to act.

More important, the advocates of compromise in Tehran have shown they can deliver, producing an agreement with real benefits.

The sanctions relief in the deal is only a modest mitigation of Iran鈥檚 economic pain, leaving the banking and oil sanctions in place for now. It poses only a modest risk to the United States and Europe of a broader unraveling of sanctions. But the benefits it offers to Iran are real. And it holds the promise of lifting all sanctions if a larger deal can be reached, which would be a critical boost to Iran鈥檚 sagging economy.

If a final deal next year offered broad sanctions relief, powerful players in Iran鈥檚 system would be making money on the new trading opportunities, and would not want their interests jeopardized. By contrast, if Iran reneges now, it would be ripping up a deal not just with the US and Europe, but with Russia and China, its only protectors on the United Nations Security Council 鈥� and the risk of even tougher sanctions or military action in response would be high.

There is always the possibility that by holding out, the US could have squeezed Iran to accept a deal that would constrain its nuclear program even more. But it would have run the risk of weakening Iran鈥檚 pro-compromise faction, which needs to provide something it could plausibly convince Mr. Khamenei to say 鈥測es鈥� to. That鈥檚 not likely to include everything the US or Israel would like. But what is in the deal already is enough to change the politics of nuclear weapons in Tehran, making a rush to the bomb less likely.

Matthew Bunn, a professor of practice at Harvard Kennedy School鈥檚 Belfer Center for Science and International Affairs, is a former adviser on nonproliferation in the White House Office of Science and Technology Policy.

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Deal weakens Iran's hard-liners and strengthens US interests

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