<"Summing it up in a sentence we could say: never consider anyone or anything as definitively "lost" in relations between nations, peoples and states. This is the heart of the political significance of mercy.">

One can probably assert with a high degree of certainty that Hitler's regime and Nazi Germany was "definitively lost" in its relations with Jews and its determination to achieve its expansionist ambitions in Europe by the imposition of power and military might. 

Such indiscriminate "mercy", without discernment and detached from a realistic understanding of the intractable moral degeneracy and pagan ideology of National Socialism most certainly amounts to 2 + 2 = 5.