As to theft and robbery in Talmudic law, as explained by Israel Shahak in 'Jewish History, Jewish Religion':

Robbery of a Gentile by a Jew is not forbidden outright, but only under certain circumstances, such as 'when the Gentiles are not under our rule', but is permitted 'when they are under our rule'. Rabbinical authorities differ among themselves as to the precise details of the circumstances under which a Jew may rob a Gentile, but the whole debate is concerned only with the relative power of Jews and Gentiles, rather than with universal considerations of justice and humanity.