It's not Israel by itself that is committing genocide, it's the US and Israel together with the help of EU countries that are committing this genocide. Stop munitions for one day and the genocide will stop. Indeed, stopping military support to the Zionist state would mean a rapid end to Israel.

As such, it's not a question of stopping the Zionist state but rather stopping the US empire. The US empire has committed much worse atrocities either directly (for example, 6 million massacred in Vietnam) or indirectly (for example, 1 million children killed through war siege on Iraq - the euphemism 'sanctions' is often used there).

At this point, only China can really do anything to stop the US empire but that would risk a nuclear Armageddon.