As I understand it, theoretically, yes in international criminal court. There are a number of provisions that make it a crime to either encourage or support genocide, even in advance of what the law would define as acts of genocide, if there’s reasonable knowledge it might happen.

This is the real reason lots of states are clapping like seals for Israeli genocide and then muttering behind their hands “within international law”. It’s not media messaging for conflict, they just want the faintest excuse to avoid the legal headache and messaging later.

Whether an international criminal court would ever actually be able to convict leaders or even members of a western state of such a crime is another matter of course. And I’m pretty fucking skeptical of that. But it feels like when the Bush admin concocted various absurd legal arguments for why rendition and torture was legal. They were going to do it anyway. They didn’t fear international criminal courts. But they could point to ‘legal advice’ and handwave it for a compliant media.