BEFORE the Second World War, Jews made up about a third of the population of Baghdad. By 2006, their number had dwindled to 12. Marina Benjamin investigates why, taking as a starting point her grandmother, Regina, who quit the country in 1951 after tensions escalated between Iraq and the nascent Israel, winding up in Hounslow, where she worked in a carpet store and remembered the old days over Turkish coffee and menthols.