Correspondent Sebastian Walker first went to Baghdad in June 2003 and spent the next several years reporting un-embedded from Iraq. In the first part of this Fault Lines series, he returns and travels from Basra to Baghdad to find out what kind of future Iraqis are forging for themselves. Now that US troops have left, how are Iraqis overcoming the legacy of violence and toxic remains of the US-led occupation, and the sectarian war it ignited? Is the country on the brink of irreparable fragmentation? After almost a decade the US war in Iraq is over. A new balance of power has emerged, but many people are living in precarity. In the second part, Sebastian returns and travels from Erbil to Fallujah to find out what kind of future Iraqis are forging for themselves.