So what should one say in a major speech...we want to expunge some political tyranny from the globe and we have chosen the following tyrannys as our demonstration project? We will carefully consider which tyrannies a really bad and those that are just kind of bad. I don't think that works well for a speech.
Quite frankly, we should be trying to trip up all tyrannies. Sometimes that means we ought to work towards a strategy of provoking a revolution, like in Iran. Sometimes that means we ought to support opposition groups, like in Lebanon. Sometimes that means surgical military strikes - for example, Mugabe should have had a laser guided bomb shoved up his arse a long time ago. And rarely, that means going to war. However, tyranny is unacceptable - and as we're discovering, allowing it to persist is dangerous.
Regards, Ivan