Much as he's clearly a bad man, i have a lot of issues with the ICTY, the tribunal set up pre ICC to deal with the yugolavs (or actually in practice to punish the serbs). What we ended up with was basically a western run institution relying on western supplied intelligence/evidence against western enemies whilst anything else was covered up or witheld if it didn't suit us. The amount of (particularly American) interference was insane. It was basically a court set up for show trials.

This is a really interesting read by the chief prosecutor of milosevic https://www.lrb.co.uk/the-paper/v32/n24/geoffrey-nice/del-ponte-s-deal

A great deal of publicly available material seems to show that such intercepts existed – see, for example, the journalist Andreas Zumach’s website or the Dutch government’s report, which records that Al Gore read extracts from them at a meeting of senior officials. My team made every conceivable effort to get hold of them, but we found ourselves blocked at every turn. When we were within a few days of getting a final order from the court, del Ponte was instructed by an outside body to withdraw the application and did as she was told. Armatta says these transcripts are important but that they were not strictly relevant to the trial. I can’t agree. If Milosevic was advised by the US to allow or encourage Mladic to take Srebrenica, as is widely asserted, genocidal intent would have been hard or impossible to establish. What he knew about what was going to happen would have been little better than what the West knew, if they were listening in to his phone calls with Mladic. According to the prosecution Milosevic was guilty of genocide because he continued to support the Serbs in Bosnia when the criminal outcome was obvious: it would have been embarrassing, to say the least, had it been revealed that the knowledge available to Milosevic had also been available to the West. Could the West be equally culpable of the genocide – if in law it was genocide?

Then you've got stories with the chief ICTY prosecutor like this one where she discusses efforts by the US and NATO to interfere or direct prosecutions https://www.spiegel.de/international/world/former-chief-prosecutor-carla-del-ponte-i-keep-telling-myself-that-justice-will-prevail-a-21b02282-89d5-4e7b-b32c-ab16bc1b778b

You've also got plenty of stories like this (which aligns with the above) https://www.theguardian.com/world/2000/sep/10/balkans.internationalcrime