Russia’s war against Ukraine has grave consequences in several political categories. These include: a reassessment of the school of ‘political realism’, one of whose proponents claims to have predicted the war. Was the West partly ‘responsible’ for the war? Second, to what extent does the war of aggression, as an undeniable violation of law, damage the status of international law and justice? Third, the war is embedded in political developments that stretch back a century. It is examined in its context within American foreign policy since the Wilsonian peace programme, in relation to the dangerous reluctance of the EU to pursue a decisive geopolitical policy towards Russia, and interpreted in the light of Stalinist echoes within Russian politics.