Wyman writes that because of a combination of nativism, anti-Semitism and an unwillingness to act on any proposal not of direct strategic value, thousands and possibly millions of Jews died who might otherwise have been saved. He documents numerous cases where the Allies found resources, such as shipping, to give aid and rescue to tens of thousands of non-Jewish refugees, while at the same time denying similar aid or rescue efforts to Jews. For instance, he documents how the British government turned back endangered Jews from Mandatory Palestine, while at the same time they generously accepted between 9,000 and 12,000 non-Jewish Greek and 1,800 non-Jewish Polish refugees into Palestine. He cites many cases where American and British authorities turned down offers by Nazis to exchange Jews for resources, often with documentation on how the Allies appeared to fear that there would be so many Jews that it could strain the Allies' war effort. He also documents the efforts of the US State Dept. to deny asylum to endangered Jews, and the failure of the American Jewish establishment to put sufficient pressure on US politicians, such as Roosevelt, to engage in effective rescue operations. Breckinridge Long, one of the four assistant secretaries of state, and a clique of other State Department executives, figure prominently in many episodes in this history. Wyman documents how Long and his colleagues repeatedly obstructed measures that would have effectively rescued Jews.