"Ultimately it goes back to the establishment of Israel after WW2 which kicked off the conflict and it has been an ongoing problem ever since."
Sorry, but Israel had nothing to do with the rise of the Muslim Brotherhood, which really began the modern Islamist ideology, and was founded even before Israel existed. Israel had nothing to do with the rise Khomeini in Iran, which was a Shi-ite counterpart of the Brotherhood, and came to power because of anger at the Shah. And Israel had nothing to do with the Soviet invasion of Afghanistan, the Mujahedeen, or the rise of the Taliban and al-Qaeda.
You can make a good case that Israel is partly at fault for the rise of Hamas and Hezbollah, but that's about it.