some of claims in the dispute...-....that(解释一些事实)- (are correct regardless of outcome of dispute) (一个选项) (have happened regardless of outcome of dispute)(另一个选项). 其他选项就是regardless of 来回挪位置。
个人认为用"are correct"更符合逻辑。因为对于outcome of dispute来说无非就是right or wrong; success or failure。而不是happen or never happen的关系。所以在outcome未知的情况下表明claims是correct的才make sense.