Board Thread:Theories and Speculation/@comment-26636534-20170825214524/@comment-26636534-20170826175234

@Thekillman

Yet, prior to the five kage summit, most of the great shinobi villages did not actively concern themselves with the loss of the bijuu. It took the capture of 7 TB for the shinobi villages to do anything. So I don't think so.

I'd say it's highly likely that the Uzumaki clan became so powerful on their own, that it made the power balance between other nations quite fragile. Leading to war, but which nations exactly participated?