British colonial administration deemed Jews and Palestinian Arabs racially inseparable into one nation

Evidence

Though ‘it is linked with ancient Jewish tradition’, the Jewish national home of Mandate Palestine was, the commissioners argued, ‘predominantly a culture of the West’. The Asian Palestinian Arabs, therefore, possessed ‘little kinship’ with the Zionist community. The Semitic family was no more. ‘There is’, the report stated, ‘no common ground between them’. The nationalism of the two communities was the greatest barrier to peace, but the separation went further: ‘Their cultural and social life, their ways of thought and conduct, are as incompatible as their national aspirations.’ Indeed, the authors argued, ‘It has long been obvious that the notion of a cultural “assimilation” between Arab and Jew is a phantasy.’ The Commission talked of Jews and Palestinians as two separate races, and contended that the only possibility for peace lay in territorial partition and racial separation, with a transfer of populations to solve the ‘cardinal problem’ of minorities living in what were to be racially defined states. — James Renton, Ben Gidley (eds.), Antisemitism and Islamophobia in Europe, 702

Categorization

• QUESTION: Which commission and report are quoted here? Worth chasing for the primary source citation and its exact wording on racial partition.
• XREF: Links to the broader theme of racial categorization and partition in Mandate Palestine, and to what is usually called the ‘assimilation is a fantasy’ argument in interwar colonial discourse.