I can tell you that those were responsible for creating Israel quite likely did not expect this vitriol or steadfastness from the Arab world.

The Arab countries are struggling big time, there are schemes that turn Arab against Arab instead of helping each other. Countries like Iraq, Lebanon, and Syria were wealthy (not really Syria but there economy was growing incredibly fast from 2006-2010) but the destabilizing forces don't like strong neighbouring rival countries. Divisions over religion are causing quite the stir as well, where those differences would be celebrated in a country like Canada.