 Wiping out half of Prussian territories from the map, Napoleon created a new kingdom of called Westphalia and appointed his young brother Jérôme as its monarch.Prussia's humiliating treatment at Tilsit caused a deep and bitter antagonism which festered as the Napoleonic era progressed.Moreover, Alexander's pretensions at friendship with Napoleon led the latter to seriously misjudge the true intentions of his Russian counterpart, who would violate numerous provisions of the treaty in the next few years.