Petraeus previously served as Commanding General of Multi-National Force - Iraq (MNF-I) from 2007 to 2008. As Commander of MNF-I, Petraeus oversaw all coalition forces in Iraq. He is credited with pulling Iraq back from the brink of all-out sectarian warfare and is widely hailed as a war hero. As head of US Central Command since 2008, Petraeus had been McChrystal's boss overseeing a huge region that includes Afghanistan, Iraq, Pakistan and Yemen.
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