In [American Sniper (2014)][2], why didn't they kill al Zarqawi?  

The team killed Butcher but not al Zarqawi - they even declare themselves mission accomplished, but in this scene, officials announce the main aim of the mission is to kill Al Zarqawi: 

![mission briefing screen capture from American Sniper][1]


  [1]: https://i.sstatic.net/VeCir.jpg
  [2]: http://www.imdb.com/title/tt2179136/