"Righteous Victims: A history of the Zionist–Arab Conflict, 1881–2001" is based largely on secondary works and gives a synthesis of existing research on the various subjects and periods covered. Morris writes "a history of this subject, based mainly on primary sources is, I suspect, beyond the abilities of a single scholar. There are simply too many archives, files, and documents. Nonetheless, parts of the present book-the coverage of the 1948 war and the decade after it, and of certain episodes that occurred during the 1930s and the 1982–85 Lebanon War—are based in large measure on primary sources."