Board Thread:General Discussion/@comment-79.52.61.188-20130415085048/@comment-1672596-20130710132615

42.98.54.216 wrote: Okay I am being lazy and read only the very first few posts and remembered what The Boss said to Jack http://www.youtube.com/watch?v=hbLeMfhGoCI Enemies are only in relative terms and it changes with times. The only thing you can believe with absolute certainty is the mission.

So, it could just be - Big Boss and Zero befriend each other again because of a common enemy or interest. Simply because they parted ways in MPO doesn't mean this will not happen. Perhaps they need to fight the Russians together, who knows? Unfortunately, XOF was implied to be both Soviet and backed by Cipher (one of the Soviet soldiers in Afghanistan wore a beret with the XOF logo), so I have a hard time believing that would be the case. Maybe it is a team up and XOF actually went renegade from Cipher, but it seems unlikely.