What is indicated by the use of the term "in no circumstances" concerning intervention?

The term "in no circumstances" indicates a total prohibition of the action in question, which in this case is intervention. This phrase emphasizes that there are no situations or contexts under which intervention would be allowed. It conveys a strong and unequivocal stance against any form of intervention, making it clear that such actions are entirely unacceptable, regardless of the circumstances that might typically justify intervention. This strong language leaves no room for interpretation; therefore, the correct answer captures the absolute and unconditional nature of the prohibition implied by the phrase.