At the heart of George W. Bush’s “new way forward” – which the president is expected to announce on Wednesday and involve substantial troop reinforcements – is the plan already under way to expand the US civilian presence across Iraq and complete the world’s largest embassy in Baghdad.

Construction of what critics call “Fortress Baghdad” has led to arguments inside the State Department amid fears that the overwhelming diplomatic presence will perpetuate a sense of US occupation and become a focus of local anger.