Already there exists a growing international concern that Israel has become "an apartheid state" pursuing policies manifesting a "settler colonial" mentality. Such perceptions pose a challenge to postcolonial international society that will not be indefinitely ignored, especially if Palestinians achieve greater unity and tactical focus.
It is possible that, in fact, Trump's call for "America First" (despite evoking unpleasant recollections that such a phrase was the invention of those in the 1930s harboring fascist sympathies) and a positive relationship with Russia, might lead [to] a more relaxed global setting.
To achieve effectiveness and legitimacy it is time to scrap the right of veto given to permanent members of the UN, or at least severely restrict its use. It is also time to either abandon the idea of permanent membership or broaden it to reflect the rise of non-Western states to the status of global leaders (e.g. Brazil, India, Indonesia, Turkey, South Africa), and to downgrade European representation by either giving the European Union a single seat or rotating a European state among Germany, France, UK, and Italy.
Hamas retains the right to defend Gaza by the use of the weaponry at its disposal, and is thus not committed to nonviolence, but it does offer the possibility of greater peace and stability for both Israelis and Palestinians if the label of "terrorism" was abandoned and the search for accommodation was commenced in good faith.
On the cautionary side, Universal Jurisdiction could be used to achieve some kind of ideologically motivated criminalisation of 'the other' that would discredit and derail a constructive effort to develop a credible meta-law that governs the behaviour of leaders of sovereign states.