Question Suppose there is a country that is being accused of human rights violations? Yet the president disregards the international court, can the international court go after the president even if he is no longer president?
The international criminal court (not the ICJ and typically not the UNSC) can act against leaders of states and it can arrest and prosecute them for actions they took while president. This happened with Milosevic in Serbia and Charles Taylor in Liberia. So the short version is yes, it is possible. The challenge has always been with executing arrest warrants. Bashir in Sudan was able to travel to other states who "politely" refused to execute ICC arrest warrants.
Thks & very tough subject; *However no-one polices the UN security council (aka the nuclear-club) & they do what the heck they want (ex: KGB2.0 Adolf Putler's recent war in Ukraine). *Thks for mentioning the Norm-of-Reciprocity ( en.wikipedia.org/wiki/Norm_of_reciprocity ). The Norm-of-Reciprocity seems the least-worst justification againt parasitic-exploitation between countries (counter ex: africa). *Over the long-term it seems laws within a country are mainly to manage the lower-classes & keep them working until they wear-out. I guesses that's just the-way the-world works.