Change has to come from within. At the end of the day, the population of an oppressed country are complicit in allowing it to happen. sometimes you've got lay your life on the line for what you believe in. External interference just makes a mess; look at Iraq. One thing we could do though is start getting quality information to the oppressed populations so that they are correctly informed about the state of things in their country. I was thinking something along the lines of infiltrating their mass communications with satellite transmissions and the like. Information is power. China, Russia, N. Korea etc do their damnedest to keep control of the movement of information.