While orthodox historians view the dispute as a matter of whether or not to invade Korea, the provocation against Korea in 1876 supports the claim that the Iwakura party never disagreed on the validity of an attack. Revisionists see the Seikanron as not a dispute of whether to invade, but instead "when" and "who" to do it. The former because those returning from the Iwakura Mission believed that Japan was too weak to attract international attention and needed to focus on internal reforms, the latter because the separation of the government between the caretaker government and the Iwakura groups allowed power-struggle between them. (Ōkubo, for example, had no real position of power at that time, seeing as his position was taken up after his departure). The arguments against invading Korea were outlined in Ōkubo Toshimichi's "7 Points Document", dated October 1873, in which he argued that action against Korea was premature because Japan was in the stages of modernizing and an invasion would be far too costly for Japan to sustain. Ōkubo's views were supported by the anti-war faction which mostly consisted of those returning from the Iwakura Mission. Iwakura had the emperor reverse the decision to send Saigō as an envoy to Korea, thus putting an end to the debate.