The surge's reduction in deaths is not a measure of success because more troops naturally reduce violence at a moment in time; what matters is long-term sustainable cooperation and binding agreements, which a temporary troop increase does not create.

Between 1898 and the early 1920s the United States militarily occupied Cuba three times (1898-1902, 1906-1909, 1917-1920) each time to overcome instability and create political institutions, yet these efforts ultimately failed, leading to Batista and then Castro and a long period of illiberal rule.

U.S. interventions throughout Latin America and Cuba installed regimes friendly to U.S. political and business interests even when those regimes were illiberal, creating a tension between the rhetoric of spreading liberty and self-determination and the reality of picking winners at the expense of the country's citizens.

People respond to incentives: raising the benefit of a behavior produces more of it, raising the cost produces less; therefore reconstruction is fundamentally about whether occupiers can create rules that give citizens the incentive to pursue ends aligned with liberal democracy, and when those incentives are absent the reconstructed institutions unravel.

In Iraq the historical animosities and centuries-old conflicts among groups and subgroups (Kurds, Sunni, Shia and their subfactions) raise the transaction and bargaining costs of forming a cooperative liberal-democratic settlement, because parties do not trust each other and have violently coerced one another in the past.

A credible commitment problem undermines reconstruction: even if rival groups could strike an agreement, they have no reason to believe it is binding once the occupier (the third-party enforcer) eventually exits, so the absence of a credible long-term enforcer discourages cooperative settlement.

Occupiers face an inherent bind: staying long enough to credibly enforce contracts contradicts the rhetoric of liberation and self-determination, because the longer the U.S. stays and intervenes in political, economic and social outcomes, the more indigenous citizens view it as serving U.S. interests rather than as a benevolent liberator.

Insurgents and terrorists in Iraq are motivated significantly by the perception that they will not get a fair share of power or pie in the new Iraq; they want the U.S. gone not because the U.S. harms citizens but so they can have a more dominant role than they would otherwise have, making their incentives destructive to cooperative reconstruction.

There is a systematic disconnect in perceptions: the U.S. views itself as a benevolent actor bringing good ends (private property, wealth, representative government), but Iraqis and neighboring populations often perceive U.S. actions as bad or self-serving, and this perception gap produces negative outcomes regardless of actual U.S. intentions.

A liberal democracy of the form the West wants will not emerge in Iraq in the near future; the best achievable outcome is some kind of stability once the relative power relations between groups become clear, and that cooperative equilibrium is unlikely to be one the U.S. would view as good.

The U.S. will likely remain involved in Iraq in some form for centuries—not continuously, but with recurring re-entry—just as it repeatedly returned to Cuba, because each intervention solves a problem that creates new problems requiring subsequent interventions.

Policymakers face a fundamental knowledge problem: what looks like a problem today is not a problem tomorrow, and interventions to fix problems create new sets of problems over years and decades because of limited knowledge and unintended consequences—illustrated by the U.S. once arming Saddam against Iran and funding bin Laden against the Soviets.

Japan and Germany succeeded as reconstructions partly because they were relatively developed countries with a strong national identity—citizens identified as Japanese or German rather than primarily with internal subgroups—removing the inter-group conflict that plagues Iraq.

Japan and Germany were international wars between clear nation-states with a clear winner and an official surrender, so the U.S. entered unambiguously as occupier-in-charge with no insurgency, whereas in Iraq the rhetoric of liberation rather than conquest created ambiguity that fostered resistance.

Reconstruction's success depends on culture and informal institutions (human capital) far more than on physical infrastructure or money: like Microsoft, where rebuilding a burned headquarters is trivial because the people and culture remain, Japan and Germany only needed physical rebuilding, whereas building a Microsoft building in Iraq would fail because the human capital and culture that make it work are absent.

MacArthur succeeded in Japan by utilizing established mechanisms of credibility rather than imposing change wholesale: he photographed himself with the Emperor to acquire legitimacy, sent the Emperor on a public-relations tour to facilitate cooperation, and passed the new constitution through the Diet while accepting ~80-90% of Japanese leaders' suggested revisions—thereby lowering the transaction costs of coordinating people around a cooperative outcome.

Keeping the Emperor alive—despite 70-80% of Americans wanting him tried for war crimes—was a high-risk gamble by MacArthur because the Emperor could have become a rallying point for insurgency rather than a tool of legitimacy; the strategy worked but could have swung the entire reconstruction the other way.

The Iraq constitution superficially resembles Japan's (drafted with U.S. influence but approved by a representative body), but it failed because the U.S. played a key role in selecting the representative body and de-Baathification disenfranchised people, undermining legitimacy and contributing to the insurgency, whereas Japan used genuinely pre-existing, broadly legitimate institutions.

The contrast between the Japanese Emperor and Saddam Hussein is that the Emperor commanded the affection and respect of citizens and could coordinate them legitimately, whereas Saddam achieved internal peace only through coercion (jailing or killing threats), so keeping Saddam in power would not have replicated the Emperor's role—it would have required ongoing gunpoint coercion that large distrustful segments would reject.

Germany's reconstruction succeeded not because of occupation but despite it: the U.S. retained Nazi-era price controls and rationing, and recovery only began when Ludwig Erhard unilaterally abolished the price controls on the radio against the occupiers' rules, because freeing prices allows resources to flow to their most highly valued ends.