To see what international law can offer in an apparently chaotic and fast changing world is far from easy. But it is only by examining and trying to understand the evolving international system that some answers may be found, because international law and international relations are in a symbiotic relationship.
The characterising features of the contemporary international system are globalisation on the one hand and a unipolar power structure on the other. The former is having a significant impact on international law as by its very nature actors are engaged in transactions across State boundaries in alliances that are not bounded by nationality. Modern technology facilitates these alliances of interest and gives an unprecedented voice to non-State actors, whether in human rights, in environmental matters or in international markets.
The concentration of military power in the United States had led to various incremental changes in authorisations of force by the United Nations, whether for peacekeeping or for enforcement actions. The evolving relationship between the United Nations and NATO has negative as well as positive factors and needs careful monitoring.