User blog comment:Deathmanstratos/Sledgehammer: 'Call of Duty: Vietnam was to be their next game'/@comment-24910987-20140510160733/@comment-24001421-20140510203613

it says in this blog, ''"before Activision got them to focus their attention on helping Infinity Ward in developing Modern Warfare 3." ''thats why they cancelled it, because they had to help iw.