The passage in particular:

However, as Lawrence knew, Britain also signed the secret “Sykes-Picot” treaty with France and Russia to divide the spoils of the Ottoman Empire between themselves allotting the region around Damascus to France. Farther east, the campaign in the Ottoman provinces of Basra, Baghdad, and Mosul— the Mesopotamia campaign in present- day Iraq— likewise betrayed its promises of liberation with an enormous Indian- style occupation regime.

Much ink has been spilled on the validity of British promises about the postwar disposition of the Middle East.

She then further holds the British responsible for destroying an otherwise peaceful Middle East and birthing Islamism.