After reconstructing the cross-biographical trajectory of Jean Lasserre and Dietrich Bonhoeffer, Frédéric Rognon’renvoi id = “re1no1” idref = “no1” typeref = “note” b * '/renvoib proposes in the second part of his research a theological review of the influences they may have exerted on each other. In particular, he assumed that sacrificial utopia would be treated differently, in order to understand how each of the two pastoralists assesses the paradoxical use of tyrannicide at the very heart of a theology of non-violence.