Non-PRO Spanish to English Other History British Mandate Palestine / Zionism / Arab-Israeli Conflict

The extract below is from the book *Breve historia del sionismo* (Joan B. Culla, 2005) and refers to a conference convened in London by the British Government in 1939 to discuss the future governance of Palestine with Jewish and Arab delegates:

Una vez que ha sepultado el Plan Peel y ha decidido desarrollar una política de conciliación anglo-árabe, el gabinete britántico **desea cargarse de razón** escenificando un último intento de consenso interconunicatario: será la Conferencia de Saint James, que entre el 7 de febrero y el 17 de marzo de 1939 reúne en ese palacio londinense a los delegados – sionistas y no sionistas – de la Agencia Judía, encabezados por Weizmann y Ben Gurión, a una delegación árabopalestina dominada por los Husseini pero sin el muftí, y a representantes de las monarquías árabes de Iraq, Egipto, Yemen, Transjordania y Arabia Saudí.
Given the context, I am assuming that phrase means something like “consolidate/bolster/solidify its position,” the general sense being (as far as I can understand) that, in the author’s view, the conference was held to provide diplomatic cover for the pro-Arab tilt on the part of the British.
In any event, I do not remember ever coming across “cargarse de razón” before (perhaps it is a somewhat antiquated expression) and I would appreciate confirmation or correction as to its intended meaning here.