Israel will ignore it, and their paid-for members of the US Congress will ensure that anyone who tries to hold Israel accountable is threatened into submission by the US military, a subsidiary of the IDF. Israel rules America, and America is the strongest nation on earth, whom nobody will seriously cross. Ergo, Israel rules the world.
Venezuela, Syria, Iran, North Korea, Russia, Belarus, Myanmar, and Afghanistan all "lost the support of the international community." Need more examples?
None of them "came to an end". That's just wishful thinking.
You don't need to "rule the world" to ignore the ICJ.
Among others, Japan ignored an ICJ order to stop hunting protected whales and Russia ignored ICJ orders related to its invasion of Ukraine. Neither one needed help from the US.
We don't need to. We just need to stop giving them military aid and sanction them until they send Netanyahu to the Hague willingly. There's more than just military action.