The increasing sectarian conflict in Iraq and the rise of Islamist parties like Hamas and Hezbollah have put American efforts to democratize the Middle East on hold and raised doubts among experts and policy makers about whether democracy is compatible with the Muslim faith. But in a campus appearance yesterday afternoon, former Malaysian Deputy Prime Minister Anwar Ibrahim offered an ardent defense of democracy in the Muslim world, telling a standing-room-only crowd in Bechtel Conference Center that "men and women are born free, even in the Islamic construct."

Alternating between serious and sporting through his two-hour speech, Ibrahim broached many of the issues aggravating relations between Islam and the West, including gender relations, American foreign policy, cultural assimilation in Europe and Pope Benedict XVI's recent comments about Islam. However, he was most outspoken regarding his home country - he was a political prisoner in Malaysia for over four years - and rejected the race - and religious-based affirmative action policies that benefit the Malay majority there.

Returning repeatedly to the topic of Muslim democracy, Ibrahim drew from historical references and personal experiences, citing the democratic regimes of Indonesia and Iran of 1950s.

"There was no debate then whether democracy was compatible with Islam," he said. "Fifty years later, we have our leaders in the Muslim world telling us we're not ready."

The fundamental nature of democracy and human rights is universal, Ibrahim emphasized, adding that problems begin with cultural miscommunication.

"We have to debunk and reject the notion, held by Muslims and non-Muslims alike, that to support democracy and freedom is to support America, "he said. "And it is important for Americans to realize democracy is a value cherished as much by Muslims as it is by Americans."

"Misperceptions are unfortunate," he added, elaborating on his impressions of American culture. "This is a country full of contradictions. The level of sophistication and intellectual flavor is unparalleled. So why must people be so prejudiced? Why is misunderstanding so pervasive? To say that Muslims are entirely anti-America is wrong."

Ibrahim offered scathing criticism of his fellow Muslims for violent reactions to both the publication of caricatures of Mohammad in a Danish newspaper in 2005 and to the more recent comment by Pope Benedict XVI referring to elements of Islam as "evil and inhuman." The cartoon spawned riots killing 139 in Nigeria, Libya, Pakistan and Afghanistan, while the Pope's remarks fueled a maelstrom of controversy, including the firebombing of Catholic churches throughout the Middle East and the shooting death of a nun in Somalia.

"There is a right to disagree but no one has the right to cause destruction or destroy life," he said. "No one has the right to call for the banning of newspapers."

Acknowledging that his comments were not necessarily indicative of Islamic public opinion, he said, "This view may not be shared by all Muslims, but I am prepared to confront them."

Ibrahim's penchant for speaking his mind and sticking to his principles has dogged the leader through a career of controversy. As a young Malaysian activist in the 1970s, he was arrested during a student protest and spent 20 months in a detention camp. Following a meteoric political ascent, he was named Deputy Prime Minister in 1993, and many expected that he was Prime Minister Mahathir bin Mohammad's chosen successor.

But their relationship turned sour, and in Sept. 1998 Ibrahim was stripped of party membership and incarcerated under charges of corruption and sodomy. The charges were eventually overturned and he was released in Sept. 2004.

Regarding Malaysian politics today, Ibrahim expressed distaste toward his nation's system of bumiputera - a system of economic and social policies designed to favor ethnic Malays.

"I reject affirmative action based on race," he said. "Our policies should benefit the poor and the marginalized."

Finally, he described the need for engagement between the Islamic world and the West, criticizing the "extreme" foreign policy of the United States and its refusal to negotiate with regimes like Hamas.

"That policy is flawed," he said, adding that "to refuse to engage is a recipe for disaster."

In the old popular song about the rout by Americans at New Orleans during the War of 1812, the British "ran so fast the hounds couldn't catch 'em." Even allowing for patriotic hyperbole, it can hardly be argued that the British extricated themselves with a great deal of dignity, particularly given that another battle in the same war inspired the American national anthem.

The impact of that defeat on the British national psyche is now obscure, but nearly two centuries later, as the Americans and their British allies seek to extricate themselves from Iraq, the story of how a superpower looks for a dignified way out of a messy and often unpopular foreign conflict has become a historical genre of sorts. As the pressure to leave Iraq increases, that genre is receiving new and urgent attention.

And in the shadow of the bleak and often horrific news emerging from Iraq nearly every day, historians and political experts are finding at least a wan hope in those imperfect historical analogies. Even in the absence of a sudden and dramatic shift on the battlefield toward a definitive victory, there may still be a slight opening, as narrow as the eye of a needle, for the United States to slip through and leave Iraq in the near future in a way that will not be remembered as a national embarrassment.

Most of the recent parallels do not seem to offer much encouragement for a confounded superpower that wants to save face as it cuts its losses and returns home. Among them are the wrenching French pullout from Algeria, the ill-fated French and American adventures in Vietnam, the Soviet humiliation in Afghanistan and the disastrous American interventions in Beirut and Somalia.

Still, there are a few stories of inconclusive wars that left the United States in a more dignified position, including the continuing American presence in South Korea and the NATO peacekeeping mission in Bosnia. But even those stand in stark contrast to the happier legacy of total victory during World War II.

The highly qualified optimism of these experts about what may still happen in Iraq - let's call it something just this side of hopelessness - has been born of many factors, including greatly reduced expectations of what might constitute not-defeat there. The United States already appears willing to settle - as if it were in a relationship that had gone sour but cannot quite be resolved by a walk out the door, punctuated with a satisfying slam.

Alongside the dampening of hopes, there has also been a fair amount of historical revisionism regarding the darker tales of conflicts past: a considered sense that if the superpowers had made different decisions, things could have turned out more palatably, and that they still might in Iraq.

Maybe not surprisingly, Vietnam is the focus of some of the most interesting revisionism, including some of it immediately relevant to Iraq, where the intensive effort to train Iraqi security forces to defend their own country closely mirrors the "Vietnamization" program in South Vietnam. If Congress had not voted to kill the financing for South Vietnam and its armed forces in 1975, argues Melvin R. Laird in a heavily read article in the current issue of Foreign Affairs, Saigon might never have fallen.

"Congress snatched defeat from the jaws of victory by cutting off funding for our ally in 1975," wrote Mr. Laird, who was President Nixon's defense secretary from 1969 to 1973, when the United States pulled its hundreds of thousands of troops out of Vietnam.

In an interview, Mr. Laird conceded that the American departure from Vietnam was not a pretty sight. "Hell, the pictures of them getting in those helicopters were not good pictures," he said, referring to the chaotic evacuation of the American embassy two years after Vietnamization was complete, and a year after Nixon resigned. But on the basis of his what-if about Vietnam, Mr. Laird does not believe that all is lost in Iraq.

"There is a dignified way out, and I think that's the Iraqization of the forces over there," Mr. Laird said, "and I think we're on the right track on that."

Many analysts have disputed the core of that contention, saying that large swaths of the Iraqi security forces are so inept they may never be capable of defending their country against the insurgents without the American military backing them up. But Mr. Laird is not alone in his revisionist take and its potential application to Iraq.

William Stueck, a history professor at the University of Georgia who has written several books on Korea, calls himself a liberal but says he buys Mr. Laird's basic analysis of what went wrong with Vietnamization.

Korea reveals how easy it is to dismiss the effectiveness of local security forces prematurely, Mr. Stueck said. In 1951, Gen. Matthew Ridgeway felt deep frustration when Chinese offensives broke through parts of the line defended by poorly led South Korean troops.

But by the summer of 1952, with intensive training, the South Koreans were fighting more effectively, Mr. Stueck said. "Now, they needed backup" by Americans, he said. By 1972, he said, South Korean troops were responsible for 70 percent of the front line.

Of course, there are enormous differences between Iraq and Korea. Korean society was not riven by troublesome factions, as Iraq's is, and the United States was defending an existing government rather than trying to create one from scratch.

Another intriguing if imperfect lesson can be found in Algeria, said Matthew Connelly, a Columbia University historian. There, by March 1962, the French had pulled out after 130 years of occupation.

That long colonial occupation, and the million European settlers who lived there before the bloody exodus, are major differences with Iraq, Mr. Connelly noted. But there were also striking parallels: the insurgency, which styled its cause as an international jihad, broke down in civil war once the French pulled out; the French, for their part, said theirs was a fight to protect Western civilization against radical Islam.

Like President Bush in Iraq, President Charles de Gaulle probably thought he could settle Algeria in his favor by military means, Dr. Connelly said. In the short run, that turned out to be a grave miscalculation, as the occupation crumbled under the insurgency's viciousness.

Over the long run, though, history treated de Gaulle kindly for reversing course and agreeing to withdraw, Mr. Connelly said. "De Gaulle loses the war but he wins in the realm of history: he gave Algeria its independence," he said. "How you frame defeat, that can sometimes give you a victory."

The Americans in Beirut and the Soviets in Afghanistan are seen, even in the long view, as cases of superpowers paying the price of blundering into a political and social morass they did not understand.

For the Soviets, that mistake was compounded when America outfitted Afghan rebels with Stinger missiles capable of taking down helicopters, nullifying a key Soviet military superiority. "I don't think they had a fig leaf of any kind," said Henry Rowen, a fellow at the Institute for International Studies at Stanford who was assistant secretary of defense for international security affairs from 1989 to 1991. "They just left."

In Beirut, the Americans entered to protect what they considered a legitimate Christian-led government and ended up, much as in Iraq, in the middle of a multipronged civil conflict. In October 1983, a suicide attack killed 241 American servicemen at a Marines barracks, and four months after that, with Muslim militias advancing, President Ronald Reagan ordered the remaining marines withdrawn to ships off the coast, simply saying their mission had changed. The episode has been cited by Vice President Dick Cheney as an example of a withdrawal that encouraged Arab militants to think the United States is weak.

Today, even as expectations for Iraq keep slipping, some measure of victory can still be declared even in a less-than-perfect outcome, said Richard Betts, director of the Saltzman Institute of War and Peace Studies at Columbia. For example, he said, an Iraqi government that is authoritarian but not totalitarian might have to do.

The key point, he said, is that under those circumstances, the outcome "doesn't look like a disaster even if it doesn't look good."

As the conflict in Iraq reminds us, nation building confounds its architects' designs with almost predictable regularity. Investments of time, resources, and specialized knowledge have not enabled large-scale political engineering. Instead, would-be nation builders have been frustrated by a proliferation of unintended consequences and their inability to elicit societal participation in their projects. Results depend more upon initial conditions prior to an intervention than the nation builder's exertions upon arrival.

Hence, the U.S. has performed most poorly when its mission required the most work (e.g., Somalia, Haiti, Iraq). Conversely, it has done best where it did less (Germany, Japan), deferring to old-regime civil servants and upgrading already functional institutions. Given the humbling record of Western powers at navigating the perils of macro-level political planning, the "how" of nation-building should be considered, in the formulation of Defense Secretary Donald Rumsfeld, a known unknown.

More likely, it is a known unknowable. The extent of unintended consequences and contingency in largescale political engineering makes disappointment certain and disaster likely.

Twentieth-century experiences belie the notion that nation-building successes will solve the problem of state failures. Forces trying to impose regime change and raise new state structures immediately grapple with societal inertia and their own deficit in understanding local politics.

This dilemma pushes would-be nation builders down one of two undesirable paths. Either they recognize their inability to restructure indigenous political arrangements or they attempt to do so in vain. Despite plans of change at the outset of nation building, those executing the project soon embrace a change of plans.

Thus, even the most committed states have been hampered by an inability to develop political capacity on the ground and improve upon the initial endowments of the country being occupied. Institutional value-added has been minimal, reflecting the problem of state instability back upon those who expected to solve it.

These patterns raise serious doubts about the chances of success in even the most well-intentioned of regimechange missions. They demarcate the limits of projecting state power abroad, whether for humanitarian or security purposes. The failures of imposed regime change lead to the conclusion that indigenous gradual political development-with all of its potential for authoritarianism and civil unrest-may be the optimal path for sustainable democratization and state building.

When comparing the uneven history of post-colonial development with the poor record of nation building we are left paraphrasing Churchill's endorsement of democracy as the worst kind of government except for the alternatives: Sovereign political development may be the worst form of government except for all those kinds of nation building that have been tried.

Infrastructural weakness is not a technical problem surmountable through systematic review of prior experiences. Indeed, the notion of "learning past lessons" deceptively implies that the current generation of academics and policymakers can succeed where their predecessors failed. The idea that nation building is a flawed but salvageable project prejudges its fundamental viability.

Once we have set our sights on rescuing an enterprise that has repeatedly frustrated its architects and their subjects, we screen out alternatives that more effectively serve the same development goals. We also risk funneling research down an intellectual cul-de-sac, at great cost in time, resources, and lives lost for those participating in failed regime-change missions. Therefore, a more productive direction for contemporary interest in nation building may mean backing up and reassessing the core problem of weak states, on one hand, and the limits of foreign intervention, on the other. Ensuring a positive impact on the country considered for intervention requires orienting the enterprise away from the takeover of state functions and toward the short-term provision of aid to local communities.

Apart from the futile pursuit of infrastructural power or the doomed deployment of despotic power (coercion), one can envision a third kind of influence, "regenerative power," which is exercised during relief efforts, such as emergency assistance following natural disasters.

Regenerative power involves neither the adoption of domestic state functions nor physical coercion. It denotes the ability of a state to develop infrastructure under the direction of the local population. For example, it means rebuilding a post office, but not delivering the mail. It is typified by the U.S. response to natural disaster relief within its own borders and abroad.

Regenerative power turns nation building on its head. Rather than imposing a blueprint from outside, participants respond to the needs of the affected community. It is restorative rather than transformative. There is no preexisting master plan for what the "final product" will be, but rather an organically evolving process in which the assisting group serves at the direction of the people being assisted.

The exercise of regenerative power is inherently limited in scale since it depends on local engagement rather than elite planning. It is inimical to macro-level ambitions but it also acquires a bounded effectiveness that imposed regime change lacks. Where nation building attempts to overwrite existing organization and only belatedly incorporates local understanding, disaster relief efforts and regenerative projects begin from the assumption that local communities know best their own needs. Existing social networks and patterns of authority are an asset, not a hindrance, and local know-how offers the principal tool for resolving local crises.

Rather than pursuing the often destructive delusion of interventionist state transformation, regenerative power starts from an interest in using state power for constructive purposes and a sober assessment of the limits of that aim. The assisting foreign groups serve under the direction of indigenous political leaders toward the achievement of physical reconstruction and emergency service provision.

With remarkable prescience Rumsfeld commented in October 2001, "I don't know people who are smart enough from other countries to tell other countries the kind of arrangements they ought to have to govern themselves."

The experience of twentieth century U.S. interventions and ongoing operations in Iraq supports his insight. Proponents of nation building or shared sovereignty arrangements have exaggerated the ability of powerful states to foster institutions in developing countries. The empirical record, from successful outcomes in Germany and Japan to dismal failures across the global south, shows the societies alleged to be most in need of strong institutions have proven the least tractable for foreign administration. Rather than transmitting new modes of organization, would-be nation builders have relied upon existing structures for governance.

This dependence on the very context that was intended for change reveals how little infrastructural power nation builders wield. They are consistently unable to implement political decisions through the local groups. Contrary to recent arguments that sustained effort and area expertise can enable success, nation building has foundered despite such investments.

Understanding that nation building is a "known unknowable" is crucial for redirecting intervention where it can be more effective. Advocates of humanitarian assistance should consider the merits of smaller, regenerative projects that can respond better to uncertainty and avoid the perils of large-scale political engineering.