The ruling also ordered Hamas to release all hostages, and Hamas has previously claimed they would abide by any ruling of the court. I find it unlikely though that they will comply.
replies(4):
> Hamas has previously claimed they would abide by any ruling of the court
No, Hamas previously claimed that they would observe a ceasefire if the court imposed one on Israel, conditioned on Israeli compliance with the same. They didn't say they would do anything related to anything other than an ceasefire order.