Answer:
The issue of whether or not the USA has a responsibility to intervene when countries led by dictators invade other countries is a complex one. On one hand, there is a strong argument to be made that the international community has a responsibility to prevent aggression and protect the sovereignty of nations. When a dictator or authoritarian leader invades another country, it can destabilize entire regions, cause humanitarian crises, and threaten global security.
On the other hand, there are also arguments against interventionism. Some people believe that countries should respect the principle of national sovereignty and refrain from interfering in the internal affairs of other nations. There is also the issue of whether or not interventionism can be effective or ethical, especially if it involves the use of military force or other coercive measures.
Ultimately, whether or not the USA or any other country has a responsibility to intervene in situations where countries led by dictators invade other countries depends on a range of factors, including the specific circumstances of the situation, the potential risks and benefits of intervention, and the ethical considerations involved. There is no simple answer to this question, and it is up to policymakers and the international community to weigh these factors carefully when making decisions about interventionism.