Stratfor once again has a great piece on what a poossible deal between the US and Iran might look like.  It is provocative, but definitely not outside the bounds of reason.

Contrary to what some say, the US can deal with regimes it disapproves of.  This doesn't mean I subscribe to the turn the other cheek mentality that has thus far been the hallmarks of the Obama Administration, however, if, as Stratfor outlines, FDR could deal with Stalin to defeat Hitler and Nixon (of all people, one of the staunchest anti-communists) could deal with Mao, then it would seem a current American President might be able to deal with Khameini or his selected figurehead, whether Ahmadinejad or otherwise.

Food for thought below from the full piece.

"Iraq, not nuclear weapons, is the fundamental issue between Iran and the United States. Iran wants to see a U.S. withdrawal from Iraq so Iran can assume its place as the dominant military power in the Persian Gulf. The United States wants to withdraw from Iraq because it faces challenges in Afghanistan — where it will also need Iranian cooperation — and elsewhere. Committing forces to Iraq for an extended period of time while fighting in Afghanistan leaves the United States exposed globally. Events involving China or Russia — such as the 2008 war in Georgia — would see the United States without a counter. The alternative would be a withdrawal from Afghanistan or a massive increase in U.S. armed forces. The former is not going to happen any time soon, and the latter is an economic impossibility.

Therefore, the United States must find a way to counterbalance Iran without an open-ended deployment in Iraq and without expecting the re-emergence of Iraqi power, because Iran is not going to allow the latter to happen. The nuclear issue is simply an element of this broader geopolitical problem, as it adds another element to the Iranian tool kit. It is not a stand-alone issue.

The United States has an interesting strategy in redefining problems that involves creating extraordinarily alliances with mortal ideological and geopolitical enemies to achieve strategic U.S. goals. First consider Franklin Roosevelt’s alliance with Stalinist Russia to block Nazi Germany. He pursued this alliance despite massive political outrage not only from isolationists but also from institutions like the Roman Catholic Church that regarded the Soviets as the epitome of evil.

Now consider Richard Nixon’s decision to align with China at a time when the Chinese were supplying weapons to North Vietnam that were killing American troops. Moreover, Mao — who had said he did not fear nuclear war as China could absorb a few hundred million deaths — was considered, with reason, quite mad. Nevertheless, Nixon, as anti-Communist and anti-Chinese a figure as existed in American politics, understood that an alliance (and despite the lack of a formal treaty, alliance it was) with China was essential to counterbalance the Soviet Union at a time when American power was still being sapped in Vietnam.

Roosevelt and Nixon both faced impossible strategic situations unless they were prepared to redefine the strategic equation dramatically and accept the need for alliance with countries that had previously been regarded as strategic and moral threats. American history is filled with opportunistic alliances designed to solve impossible strategic dilemmas. The Stalin and Mao cases represent stunning alliances with prior enemies designed to block a third power seen as more dangerous.

It is said that Ahmadinejad is crazy. It was also said that Mao and Stalin were crazy, in both cases with much justification. Ahmadinejad has said many strange things and issued numerous threats. But when Roosevelt ignored what Stalin said and Nixon ignored what Mao said, they each discovered that Stalin’s and Mao’s actions were far more rational and predictable than their rhetoric. Similarly, what the Iranians say and what they do are quite different...

Consider the American interest. First, it must maintain the flow of oil through the Strait of Hormuz. The United States cannot tolerate interruptions, and that limits the risks it can take. Second, it must try to keep any one power from controlling all of the oil in the Persian Gulf, as that would give such a country too much long-term power within the global system. Third, while the United States is involved in a war with elements of the Sunni Muslim world, it must reduce the forces devoted to that war. Fourth, it must deal with the Iranian problem directly. Europe will go as far as sanctions but no further, while the Russians and Chinese won’t even go that far yet. Fifth, it must prevent an Israeli strike on Iran for the same reasons it must avoid a strike itself, as the day after any Israeli strike will be left to the United States to manage.

Now consider the Iranian interest. First, it must guarantee regime survival. It sees the United States as dangerous and unpredictable. In less than 10 years, it has found itself with American troops on both its eastern and western borders. Second, it must guarantee that Iraq will never again be a threat to Iran. Third, it must increase its authority within the Muslim world against Sunni Muslims, whom it regards as rivals and sometimes as threats.

Now consider the overlaps. The United States is in a war against some (not all) Sunnis. These are Iran’s enemies, too. Iran does not want U.S. troops along its eastern and western borders. In point of fact, the United States does not want this either. The United States does not want any interruption of oil flow through Hormuz. Iran much prefers profiting from those flows to interrupting them. Finally, the Iranians understand that it is the United States alone that is Iran’s existential threat. If Iran can solve the American problem its regime survival is assured. The United States understands, or should, that resurrecting the Iraqi counterweight to Iran is not an option: It is either U.S. forces in Iraq or accepting Iran’s unconstrained role...

The strategic problem is, of course, Iranian power in the Persian Gulf. The Chinese model is worth considering here. China issued bellicose rhetoric before and after Nixon’s and Kissinger’s visits. But whatever it did internally, it was not a major risk-taker in its foreign policy. China’s relationship with the United States was of critical importance to China. Beijing fully understood the value of this relationship, and while it might continue to rail about imperialism, it was exceedingly careful not to undermine this core interest.

The major risk of the third strategy is that Iran will overstep its bounds and seek to occupy the oil-producing countries of the Persian Gulf. Certainly, this would be tempting, but it would bring a rapid American intervention. The United States would not block indirect Iranian influence, however, from financial participation in regional projects to more significant roles for the Shia in Arabian states. Washington’s limits for Iranian power are readily defined and enforced when exceeded.

The great losers in the third strategy, of course, would be the Sunnis in the Arabian Peninsula. But Iraq aside, they are incapable of defending themselves, and the United States has no long-term interest in their economic and political relations. So long as the oil flows, and no single power directly controls the entire region, the United States does not have a stake in this issue."