User blog comment:The Milkman/Phantasy Philosophy: Elder Scrolls/@comment-669073-20120913172002

Don't forget, the Nerevarine went to Akavir over 400 years ago. In that time it's possible that his presence has had a major influence on it's geopolitical state. It's possible they they would be more open to relations with Tamriel now. It's even possible that Nerevarine's immortality garnered him a position of godhood in Akavir, and he used it to unite the four races under one banner and he sent a diplomat to Tamriel to sue for trade or combined forces against another foe threatening Akavir. While the Thalmor would probably not be interested in helping them, the Redguard or Nords almost certainly would take that offer to defend Hammerfell/Skyrim and put down the AD. (Of course this is based on Nerevarine actually being physically immortal.)