Historically, international law lent a measure of legality to the colonial system, and allowed the West to set the rules for participation as a sovereign state on a global level. It also protected the interests of foreign investment in countries of the global South even when these were exploitative, and deprived countries of the benefits of resources situated within their territories.
The main challenge is what to do in the face of double standards. Those who should be rendered accountable under international criminal law, the Kissingers of this world, enjoy de facto impunity, while those who come from countries that have long been targets of hegemonic abuse are used as poster children of accountability.
At present, the United States, with over 700 foreign military bases, navies in every ocean, a programme to militarise space, and drone bases planned for all regions of the world, is increasingly perceived in relation to its hard power diplomacy, a threat to political independence and stability for many countries.
So far, the official definitions of terrorism have the role of demonizing the enemies of the United States and Israel, and of sanitizing recourse to indiscriminate force by both governments that causes widespread death of innocent civilians. This double standard is built around the current way in which the vocabulary of terrorism is being used in this country.
This issue of expanding the reach of international criminal law by reliance on the use of Universal Jurisdiction by domestic courts needs to be balanced against the injustice of according impunity to those with strong geopolitical backing. It is notable that several western European countries backtracked on UJ after threats of retaliatory moves by the United States and Israel. There is no doubt that the domain of UJ is a geopolitical battleground.
There was a deliberate decision after the failure of the League of Nations to make the next attempt to establish a global political actor sensitive to geopolitical realities. The underlying idea was to provide major states, defined in 1945 by reference to the winners in the Second World War (now an anachronism), with assurance that they could take part in the UN without jeopardising their national interests. In this regard, the UN has succeeded, as none of the big countries has withdrawn, and the Organisation has managed to achieve virtually universal membership of all sovereign states.
With Islamophobic tendencies in Europe and North America it is quite possible that Islamic leaders could be charged with 'political genocide'. An extremist American pastor in a small Florida church held a trial that convicted the Koran of encouraging the murder of non-Muslims and of being responsible for the 9/11 attacks. It is this sort of outlook that would be encouraged to claim that Islam embodied 'political genocide', a development that would have many negative effects on inter-civilisational relations within and among countries.
Trump will have to take up juggling if he goes ahead and scraps the agreement with Iran and at the same time, seeks to avoid alienating Russia, and quite possibly France and Germany. These European countries are already nervous about what the Trump presidency means with respect to the future of the post-World War II international order that has essentially kept the peace on the continent since 1945. This order is far from perfect, of course, and under pressure from other sources, especially due to the rise of chauvinism and European Trumpism.
The idea of self-determination was gradually given credibility by international law, and it lent strong emancipatory support to movements of liberation struggling against a West-centric world order. Latin American countries used international law creatively, both to limit the protection of foreign investment by establishing the primacy of national sovereignty in relation to natural resources, and by building support for the norm on non-intervention in internal affairs.