There are certainly manifold shameful aspects to US foreign policy. However, it does humanity a disservice to disregard the degree to which the US has tried to promote self-determination in the past 40 years. The US really tried to run free and fair elections in Afghanistan and Iraq. The Taliban and Al-Sadr-aligned parties were allowed to stand in elections. The majority Shia and Kurdish minorities in Iraq now have much more political representation than they had under the Ba'athists. The elections in Afghanistan showed that the US installed government was closer to majority opinion than the Taliban regimes before or after.
The many shameful aspects of US foreign policy absolutely should be brought to light, but that doesn't mean retreating to defeatist nihilism. There can be something new under the sun, and US occupations of the past 40 years have been markedly different from previous empires. It's not enough progress as a society, but it is progress.
Invading a country is the opposite of self-determination, and justifying invasion based on an abstracted universalism was also used by the British empire.
Maybe I should have used the term "popular self-determinism". If the result is the government better represents the will of the populace at large, then popular self-determinism is improved, even if externally imposed.
This pattern goes back to Napoleon: the idea being that the democratic states created by the invading armies were more legitimate/self-determined than the existing monarchal states. However the idea didn't work: monarchal rule returned, and returned in a stronger and more powerful form. There's at least 200 years of experience to suggest that liberal/democratic imperialism is not viable as a strategy, and in fact, provokes more reaction.
The many shameful aspects of US foreign policy absolutely should be brought to light, but that doesn't mean retreating to defeatist nihilism. There can be something new under the sun, and US occupations of the past 40 years have been markedly different from previous empires. It's not enough progress as a society, but it is progress.