I was just about to say that the US and UK, with the help of the CIA, could overthrow Iran's elected government and put in someone who would work with the US like we did back in 1953.
I love learning about WW1, and I'm always surprised to see that countries don't learn some of the most significant lessons from that conflict. As it turns out, people overthrow their own government if you starve them. Germany was fighting France to the west, Russia to the east, and the north coast was blocked by the British Navy. It was a complete shutdown of trade on all sides. By the end of the war, metal was in such short supply that they were tearing out water pipes and melting down church bells just to make bullets. Even after an armistice was signed, the Kaiser was forced to step down, and he fled to Holland to save his own life. Russia had collapsed the year before for a lot of the same reasons - diverting materials to war causes widespread shortages and unstoppable inflation. The tsar was forced to step down, and his entire family was killed. France and UK were fairly close to collapsing as well, but they were doing a lot better than Germany and Russia. Throwing all of your resources into a war (which Paul Krugman argues is a good thing) tends to cause extreme and widespread poverty. It leads to revolutions. You don't even need to put the CIA into the country. The Germans were responsible for sending Lenin to Russia. He wasn't a spy. He was just a Russian guy who wanted to cause trouble, and the Russian people were hungry enough to support anyone as long as it destroyed the existing government.
This works both ways. Living in Iran under the Shah sucked, so guess what happened. Yep, overthrown. If a government has a puppet you like, it's in your best interest to make that country prosper so the puppet doesn't get thrown out. If a government has a leader you don't like, it makes more sense to have unrestricted trade warfare. Instead of invading Iraq, it probably would have been easier and cheaper to block all trade in and out of the country. Just let people get angry and kill their leader so you don't need to. It would still be a humanitarian disaster, but it would be a lot more humane than what we did. Iraq is a genetic disaster because of us.
link. At least starving people to death doesn't cause birth defects for decades afterward.
Some of the smarter leaders throughout history understood this concept. Bismark was responsible for creating the first welfare state. As long as average people were doing ok, nobody was in a rush to change the government. One could argue that prosperity is the only thing keeping America's government in place. Guys like Bush I and Clinton were corrupt just like any other politicians, but people didn't really care since the economy was doing well. The US economy has been steadily shrinking since 2000, so people seem to get angrier every year. Look at what is happening in Greece right now. Are people rioting because today's politicians are more corrupt than yesterday's politicians? Of course not. People are rioting because the economy is horrible, people don't have jobs, and they don't have hope. Revolutions have everything to do with economics, so the most effective war will always be economic in nature.