Former British Ambassador Craig Murray says the UNESCO also sets a precedent for Palestine to join the International Criminal Court:

The UNESCO membership is crucial recognition of Palestine’s statehood, not an empty gesture. With this evidence of international acceptance, there is now absolutely no reason why Palestine cannot, instantly and without a vote, join the International Criminal Court. Palestine can now become a member of the International Criminal Court simply by submitting an instrument of accession to the Statute of Rome, and joining the list of states parties.

As both the USA and Israel refuse to join the ICC because of their desire to commit war crimes with impunity, acceding to the statute of Rome would not only confirm absolutely that Palestine is a state, it would reinforce the fact that Palestine is a better international citizen with more moral legitimacy than Israel.

There is an extremely crucial point here: if Palestine accedes to the Statute of Rome, under Article 12 of the Statute of Rome, the International Criminal Court would have jurisdiction over Israelis committing war crimes on Palestinian soil. Other states parties – including the UK – would be obliged by law to hand over indicted Israeli war criminals to the court at the Hague. This would be a massive blow to the Israeli propaganda and lobbying machine.