What are some of the primary reasons for the seemingly ceaseless conflict/strife in the Middle East?

by yaavsp
Searocksandtrees

Moderator note: Since this can be an emotional/controversial subject, just a reminder to everyone who might respond here that in /r/AskHistorians, respondents are expected to be able to answer in depth, handle follow-up questions, and cite solid source material. Additionally, no opinion, speculation, or anecdotes, and no current events: keep discussion to events/conditions pre-1995 only. Click here for the rules. Thanks all!