In a broad sweep from Central Europe to Ireland and from the Sixteenth to the early Nineteenth-century, this work puts the Jewish community and its rabbinic and 'lay' leaders at the centre of Jewish history. Of surpassing value is Kochan's treatment of the community not only as a religious but also as a political unit. It shows the community at grips with the Reformation and the introduction of the ghetto system in the Italian states. Thence to the great maritime centre of Venice, Amsterdam, Hamburg and London, under the dominance of the Sephardi exiles from Spain and Portugal; and also to the metropolitan centres of Prague, Vienna and Berlin and the liaison of their court-Jews with the Hapsburgs, Bourbons and Hohenzollerns. This was not achieved without severe tension inside the communities and, whilst eschewing the concept of class-struggle, Kochan's analysis of the clash of interests between the few wealthy and the multitude of poor Jews raises doubts about the whole notion of 'community'.