With his bold message to Iran’s leaders, President Obama achieved four things essential to any rapprochement.

He abandoned regime change as an American goal. He shelved the so-called military option. He buried a carrot-and-sticks approach viewed with contempt by Iranians as fit only for donkeys. And he placed Iran’s nuclear program within “the full range of issues before us.”

By doing so, Obama made it almost inevitable that one of the defining strategic issues of his presidency will be a painful but necessary redefinition of America’s relations with Israel as differences over Iran sharpen. I will return to that below.

The innovations in the president’s Persian New Year, or Nowruz, overture to Tehran were remarkable. He referred twice to “the Islamic Republic of Iran,” a formulation long shunned, and said that republic, no other, should “take its rightful place in the community of nations.” Here was explicit American acceptance of Iran’s 30-year-old clerical revolution.