Board Thread:Naruto Discussions/@comment-30762323-20180720171651/@comment-25122992-20180720210225

Emm... did you actually read what I said in my previous post? Madara planned on making Kiri Anbu kill Rin if Kakashi hadn't done it first, which means that Isobu's rampage wasn't his true goal at all and it would've never happened because of Rin's death.

Kakashi obviously wasn't doing fine, with all respect, even he wouldn't have been able to defeat the whole squadron of Anbu while protecting Rin at the same time. And since Rin's death was a prime objective of Madara, it would've happened before she could ever reach Konoha anyway. So, the whole Isobu subplot was there just to make Obito believe this was a war tragedy and not someone (Madara) arranging it intentionally.