Thanks for responses to my question on NI, it's reassuring.
Bambam International law does allow people to defend themselves it's not the case that following international law means you're left defenceless and just have to accept being slaughtered. Indeed, Israel is arguing now that they are acting in self-defence. But you are not supposed to violate international law yourself in defending yourself for example, even if your enemy is using human shields, it is not 'okay' to just shoot them anyway.
Israel has options for dealing with Hamas other than indiscriminately bombing Gaza -- this was not a last resort situation.
Berry the problem with the 'people should just move on' logic is that you could equally apply it to the Palestinians. Why can't they just accept that they lost wars to Israel in 1948 and 1967 and make new homes for themselves in neighbouring Arab countries? Why are they entitled to a state just for Palestinians?
I also think it's problematic to compare the Jews, who throughout their history have been a minority population subject to horrendous persecution and death throughout the world, to Catholics, who have comprised one of the world's largest religions and strongest powers for centuries.
To be clear, I think the answer is a Jewish state and a Palestinian state -- but with events in recent years, this scenario is increasingly becoming impossible.