You are welcome. Just define what is necessity, please. I know that pacifism is seen very contrary. Some even refuse to use violence when they are attacked. Like Gandhi. I really respect that. He had his way to fight for his ideas. Others only use violence to defend themselves or their families. That is alright too.
I would not accept that war or violence is acceptable if you cannot reach your goals with peaceful means. Or any kind of preventive war.

Caesar, great to have you here! Did they kick you out of the Left Wing Club? Let's firts have a drink