Stephen Kinzer has written an Op-Ed for the LA Times that is worth a read. I find this guy really interesting. He's made a study of US intervention and finds, not surprisingly, that we're not that good at it (especially in the long term).

Iran was an incipient democracy in 1953, but Prime Minister Mohammed Mossadegh - chosen by an elected parliament and hugely popular among Iranians - angered the West by nationalizing his country's oil industry. President Eisenhower sent the CIA to depose him. The coup was successful, but it set the stage for future disaster.

The CIA placed Mohammed Reza Pahlavi back on the Peacock Throne. His repressive rule led, 25 years later, to the Islamic Revolution. That revolution brought to power a clique of bitterly anti-Western mullahs who have spent the decades since working intensely, and sometimes violently, to undermine U.S. interests around the world.
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Overthrowing a government is like releasing a wheel at the top of a hill - you have no idea exactly what will happen next. Iranians are not the only ones who know this. In slightly more than a century, the United States has overthrown the governments of at least 14 countries, beginning with the Hawaiian monarchy in 1893, and forcibly intervened in dozens more. Long before Afghanistan and Iraq, there were the Philippines, Panama, South Vietnam and Chile, among others.

Most of these interventions not only have brought great pain to the target countries but also, in the long run, weakened American security.

Cuba, half a world away from Iran, is a fine example. In 1898, the United States sent troops there to help rebels overthrow Spanish colonial rule. Once victory was secured, the U.S. reneged on its promise to allow Cuba to become independent and turned it into a protectorate.

More than 60 years later, in his first speech as leader of the victorious Cuban revolution, Fidel Castro recalled that episode and made a promise. "This time," he vowed, "it will not be like 1898, when the Americans came in and made themselves masters of the country."

Those words suggest that perhaps if the U.S. had allowed Cuba to go its own way in 1898, the entire phenomenon of Castro communism might never have emerged.

The U.S. deposed a visionary leader of Nicaragua, Jose Santos Zelaya, in 1909 and sent his unlucky country into a long spiral of repression and rebellion.

Forty-five years later, still believing that "regime change" can end well, the U.S. overthrew the left-leaning president of Guatemala, Jacobo Arbenz, and imposed a military regime. That regime's brutality set off a 30-year civil war in which hundreds of thousands died.

Today, Latin America and the Middle East are the regions of the world in the most open political rebellion against U.S. policies. It is no coincidence that these are the regions where the U.S. has intervened most often. Resentment over intervention festers. It passes from generation to generation. Ultimately it produces a backlash.

I love this stuff, it's really interesting to learn all the times we've played this game and how often it's failed to produce good results, namely, every time.