And the ICC is not a prime example of influence of foreign nations on other's politics?
Funding of nearly every major USA political can only get you so far.
The judges are picked by the member states, which are political. Karim khan (the former prosecutor who was kicked out because of sexual assault) asked to come to Israel as a delegation to investigate the charges. The day before he canceled the trip, and published the accusations without hearing the Israeli defense.
The ICC is geopolitical theater just the same as the UN.
Why isn’t there arrest for irans leaders? Why not for erdogan? Why not for living Hamas leaders?