Despite the public histrionics in the run-up to the U.N. General Assembly meetings, both White House and Israeli officials assert that the two sides behind the scenes have come closer together in their views in recent days. While there may not be exact agreement on what constitutes a “red line” — a sign of Iranian progress toward the development of nuclear weapons that would trigger military action — the military option being advocated by the Israelis is considerably more limited and lower risk than some of those that have been publicly debated.

Indeed, according to a source close to the discussions, the action that participants currently see as most likely is a joint U.S.-Israeli surgical strike targeting Iranian enrichment facilities. The strike might take only “a couple of hours” in the best case and only would involve a “day or two” overall, the source said, and would be conducted by air, using primarily bombers and drone support. Advocates for this approach argue that not only is it likely to be more politically palatable in the United States but, were it to be successful — meaning knocking out enrichment facilities, setting the Iranian nuclear program back many years, and doing so without civilian casualties — it would have regionwide benefits. One advocate asserts it would have a “transformative outcome: saving Iraq, Syria, Lebanon, reanimating the peace process, securing the Gulf, sending an unequivocal message to Russia and China, and assuring American ascendancy in the region for a decade to come.”