We dont have to  Wikipedia doesnt care what International Law is to be honest there is no such thing as international law by the wayjust treaties and accords and conventions that nations enter into not that this matters  All Wikipedia cares is what reliable sources say  Reliable sources say the islands are in dispute so we must report that  We cannot say who is right although we are required to analyze the level of importance of each argument and include the opinions in due weight to their representation in the real world This is fundamentally what Wikipedia doescollect information from other sources summarize it and report it in encyclopedic format  We do not make judgments about who is right or wrong  Since it seems like you dont understand how Wikipedia works I recommend you read three of our key policies as they may help you understand WPV which is the policy that requires that all information be verified WPNOR which is is the policy that requires that we present only what others say and do not include our own original research and WPNPOV which requires that we report the information neutrally without giving inappropriate bias to one side or the other