Your opinion on this question.?

When does a moral obligation overrule an oath? This question is designed for our military...please keep in mind what is going on in Syria and Libya, what has happened in Egypt. Now in our country, where the present administration twists the Constitution, ignores it, or fires the advisers that won't support the objective. If mass protests occurred in numerous parts of our country because of the decisions of our present (or future) administrations continue to subvert the people to the government, would you feel your oath absolves you from any responsibility, or is it a moral decision to imprison, fire upon or beat a citizen? Numerous other countries to look at: Germany, Cambodia, China, etc.