Peter Longerich, one of the more authoritative historians of the Holocaust, has convincingly argued that the Nazi leadership’s commitment to executing the Final Solution through designated death camps was not made until the end of 1941: “The leadership at the centre and the executive organizations on the periphery radicalized one another through a reciprocal process.” Construction of the first purpose-built extermination camp at Bełżec, near Lublin, began only on 1 November 1941. Longerich cites evidence that, until very late that year, key SS officers were still talking of mass deportations
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