The US didn't know what it was doing in Afghanistan [It doesn't know what it's doing in the world]

Jeffrey D. Sachs, "Blood in the Sand," Project Syndicate, August 17, 2021.

The article opens:

NEW YORK – The magnitude of the United States’ failure in Afghanistan is breathtaking. It is not a failure of Democrats or Republicans, but an abiding failure of American political culture, reflected in US policymakers’ lack of interest in understanding different societies. And it is all too typical.

Almost every modern US military intervention in the developing world has come to rot. It’s hard to think of an exception since the Korean War. In the 1960s and first half of the 1970s, the US fought in Indochina – Vietnam, Laos, and Cambodia – eventually withdrawing in defeat after a decade of grotesque carnage. President Lyndon B. Johnson, a Democrat, and his successor, the Republican Richard Nixon, share the blame.

In roughly the same years, the US installed dictators throughout Latin America and parts of Africa, with disastrous consequences that lasted decades. Think of the Mobutu dictatorship in the Democratic Republic of Congo after the CIA-backed assassination of Patrice Lumumba in early 1961, or of General Augusto Pinochet’s murderous military junta in Chile after the US-backed overthrow of Salvador Allende in 1973.

In the 1980s, the US under Ronald Reagan ravaged Central America in proxy wars to forestall or topple leftist governments. The region still has not healed.

And so on.

What these cases have in common is not just policy failure. Underlying all of them is the US foreign-policy establishment’s belief that the solution to every political challenge is military intervention or CIA-backed destabilization.

That belief speaks to the US foreign-policy elite’s utter disregard of other countries’ desire to escape grinding poverty. Most US military and CIA interventions have occurred in countries that are struggling to overcome severe economic deprivation. Yet instead of alleviating suffering and winning public support, the US typically blows up the small amount of infrastructure the country possesses, while causing the educated professionals to flee for their lives.

Even a cursory look at America’s spending in Afghanistan reveals the stupidity of its policy there. According to a recent report by the Special Inspector General for Afghanistan Reconstruction, the US invested roughly $946 billion between 2001 and 2021. Yet almost $1 trillion in outlays won the US few hearts and minds. [...]

In short, less than 2% of the US spending on Afghanistan, and probably far less than 2%, reached the Afghan people in the form of basic infrastructure or poverty-reducing services. The US could have invested in clean water and sanitation, school buildings, clinics, digital connectivity, agricultural equipment and extension, nutrition programs, and many other programs to lift the country from economic deprivation. [...]

The US should never have intervened militarily in Afghanistan – not in 1979, nor in 2001, and not for the 20 years since. But once there, the US could and should have fostered a more stable and prosperous Afghanistan by investing in maternal health, schools, safe water, nutrition, and the like. Such humane investments – especially financed together with other countries through institutions such as the Asian Development Bank – would have helped to end the bloodshed in Afghanistan, and in other impoverished regions, forestalling future wars.

I fear foreign policy is more driven by projective needs than by rational calculation of any kind.