The Friedman Doctrine is an idea that was developed by economist Milton Friedman. It basically states that countries should not interfere in other countries' economies. This means that other countries should not tell another country what it should buy or sell or what it should or should not do with its money. Instead, countries should let the markets make the decisions. This means that people in each country should be able to decide how to use their money and how much to spend without outside interference. The more freedom people have to do what they want with their money, the better the economy will be for everyone.