How Washington Encourages Israel to Bomb Iran

In recent speeches, interviews and private meetings, President Obama has been trying hard to dissuade Israel from bombing Iran's nuclear facilities. All along, however, he's actually made it much easier for Israel to attack. The capabilities and will of Israel's military remain unclear, but the critical parts of the administration's Iran policy (plus the behavior of the Islamic Republic's ruler, Ali Khamenei) have combined to encourage the Israelis to strike.

Public statements define a president's diplomacy, and in front of the American Israel Public Affairs Committee this month Mr. Obama intensely affirmed "Israel's sovereign right to make its own decisions about what is required to meet its security needs." He added that "no Israeli government can tolerate a nuclear weapon in the hands of a regime that denies the Holocaust, threatens to wipe Israel off the map, and sponsors terrorist groups committed to Israel's destruction."

By so framing the Iranian nuclear debate, the president has forced a spotlight on two things that his administration has wanted to leave vague: the efficacy of sanctions and the quality of American intelligence on Tehran's nuclear program. The Israelis are sure to draw attention to both in the coming months.

Given Mr. Khamanei's rejection of engagement, Mr. Obama has backed sanctions because they are the only plausible alternative to war or surrender. Ditto Congress, which has been the real driver of sanctions. But the timeline for economic coercion to work has always depended on Israeli or American military capabilities and the quality of Western intelligence. Neither factor engenders much patience.

Even the U.S. Air Force might have difficulty demolishing (with conventional explosives) the buried-beneath-a-mountain Fordow nuclear site near Qom, where the Iranian regime has been installing uranium-enrichment centrifuges. In Israel, Mr. Netanyahu and his hawkish defense minister, Ehud Barak, may have waited too long to raid this now-functioning facility; steady Iranian progress there certainly means that the Israelis must strike within months if they are serious about pre-emption.

Although the Iranian regime dreads new Western sanctions against its central bank, and especially the ejection of the Islamic Republic from the Swift international banking consortium, Tehran still has a huge advantage concerning time. Iran made around $79 billion last year from the sale of oil. Whatever the cost of its nuclear program, the regime has surely spent the vast majority of the monies required to deliver a nuclear weapon, and Tehran certainly still has the few billions required to finish producing highly enriched uranium, triggering devices, and warheads for its ballistic missiles.

Sanctions that cannot starve the nuclear program could still conceivably collapse the Iranian economy, bringing on political chaos that paralyzes the nuclear program. But if we have learned anything from the past 60 years of sanctioning nasty regimes, it is that modern authoritarian states have considerable resilience and a high threshold of pain.

Many Iran observers would like to believe that sanctions could rapidly exacerbate divisions within the regime and thereby force Tehran to negotiate an end to possible nuclear weaponization. But this scenario beggars the Iranian revolutionary identity. Mr. Khamenei has shown no willingness to halt the program. Commanders of the Revolutionary Guards Corps, who are handpicked by the supreme leader and now control much of the Iranian economy and oversee "atomic research," have not even hinted they differ with Mr. Khamenei on the nuclear question.