Robert Kagan writes in today's Washington Post:
The president needs to realize that this is his "tear down this wall" moment. And that it is fleeting. Iran's leaders are rushing to obtain a nuclear weapon in part because they believe that possessing the bomb will strengthen their hand domestically as well as internationally. They're probably right. Moreover, Israel's patience will not be infinite. If too much time passes without change in Iran, Israel may feel compelled to attack, no more how questionable the likelihood of success and how grave the fallout.
Were the Iranian regime to fall on Obama's watch, however, and were he to play some visible role in helping, his place in history as a transformational world leader would be secure. Thirty years ago, the Iranian Revolution triumphed, aided by the incompetence of top Carter administration officials, some of whom, to this day, call for normalization with the Ayatollah Khomeini's brutal successors. Obama has a chance to reverse their strategic and ideological debacle. But he cannot wait too long.
Time is running out. Hurry up and read Kagan's piece.