Kyle was a Navy Seal who, during four tours of duty in Iraq, became the most lethal sniper in US military history; he killed at least 160 Iraqis. I remember learning about Kyle's death in 2013, when a fellow veteran (whom he was attempting to help) shot him at a shooting range. I remember thinking that his death seemed a tremendous irony, and I also recall that there was some controversy at the time about the details of his biography.
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Over the course of the movie, Kyle begins to question his personal motivation for fighting, which was reminiscent of The Hurt Locker. The way that he prioritized his brothers-in-arms over his wife and family also reminded me of The Hurt Locker.
In terms of the larger geopolitical questions about America's involvement in Iraq, I think Generation Kill raised more questions and better conveyed a sense of moral ambiguity.
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599. How many American soldiers have died in Iraq in 2015? I remember that a helicopter was shot down in Afghanistan earlier this year, but have there been any casualties in Iraq?
After watching American Sniper, I was curious about the historical authenticity of the Syrian sniper Mustafa, who Kyle pursues for several years. I gather that there was a sniper who had competed in the Olympics for Syria, but that the interweaving of Kyle and Mustafa's stories was more of a narrative artifice.