<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
Is war needed?
<|assistant|>
War is not always needed, but it can be a means to achieve a just cause or defending oneself against an aggressor. In some cases, war is unavoidable in order to stop an aggressor from further attacks and to restore peace. It is only when all peaceful methods have failed that resorting to violence can be justified.