So far US invaded or staged a coup in every country that had audacity to refuse using US dollar. That is one of the most important functions of US military powe

So far US invaded or staged a coup in every country that had audacity to refuse using US dollar. That is one of the most important functions of US military power. Also, countries with US military bases aren't really sovereign. They can't for example refuse to invest significant portion of their GDP in US treasuries.