Abstract Now free of its debt crisis rescue package, Greece again seeks reparation payments from Germany. In the context of the international discussions over Greece’s debts in 2015 the Greek Prime Minister assigned already once before a committee to address the issue of making new demands for billions World War II reparation payments from Germany. This article argues that reparation claims are excluded because of several reasons as the Final Settlement with respect to Germany (1990), the limitation of claim, the principle of estoppel and potentially the clausula rebus sic stantibus. Greece’s claims for reparation are legally not justified.