Board Thread:Metal Gear Solid V/@comment-98.183.25.16-20150918215627/@comment-141.135.169.191-20151020195751

Kaz got killed by Ocelot.

The ending of MGSV strongly hints at this that they would at a later date would have to kill eachother. To point this out is a strong indicator that it's intentional to hint at Ocelot.