The U.S. should let nations decide what government they want until they do something that directly involves the United States of America. Then the U.S. should use its strength to protect human life and human rights. Like we did in World War 1, World War 2, and Vietnam. The countries involved in those wars were China, Germany, Korea, and Vietnam.
Much of Vietnam was controlled by France at the time before the war. North Vietnam was communist government. South Vietnam was republican form of government.
We think that all countries should be able to decide what government they want to have until they harm the United States of America in any way. Then we should try all peaceful ways to negotiate and if non of that works we should use armed forces.