In the context of “what did the military action physically do?” it is important to recognize the difference between direct action and additional effects caused by the reaction from the affected government.

The attack on Venezuela was orders of magnitude less than the attack/war with Iran. Yet, Venezuela gave up financial control of its oil supply while Iran might be getting unprecedented control over a strategic waterway. If a government is going to resist American imperialism, it needs both the means and the will to resist. Iran has it, Venezuela didn’t have it, and early indications seem like Cuba is more like Venezuela than Iran.