Michael McCune's April 7 letter "The Iraq War Was a Calamity That Must Never Be Repeated" about the futility of the Iraq War was right on point. We seem not only unable to learn from the past, but also I believe we just don't care. Vietnam was a disaster thanks to President Lyndon Johnson's lie about the Gulf of Tonkin. The first Gulf War achieved nothing except to save the Bush family ties with Kuwait, at a cost of $60 billion, and we know the lies that put us into Iraq.
No country has been able to conquer Afghanistan, including the Soviet Union which spent a decade trying, and our invasion has been a miserable failure thanks, in a small way, to the Afghans using the weapons we gave them to fight the Soviets against us. All we've done is to make millionaires of Hamid Karzai and his cronies.
We continually try to be the policeman of the world and impose our way of life on people who have a right to live the way they wish. History doesn't mean a thing if we let our leaders do whatever they want. But, when less than half of eligible voters participate in elections, it's clear we just don't seem to care and history will repeat itself.