Anything involved Israel just has a depressing tendency to quickly degrade into double standards, name calling and selective vision from otherwise intelligent-seeming people I would normally respect. That's what really depresses me: the inability to have an intelligent rational discussion on anything involving Israel.
Be mercilessly critical if it's justified! I certainly am, and don't think oil is worth so much blood. But it's as necessary with Saudi Arabia, Turkey, Iran, and Palestine as it is with Israel. Just be lucid, honest and fair about it, and willing to admit you don't have all the facts or answers. Why that's so damned hard baffles me, especially from people like engineers who trade in complexity and nuance and edge cases days in and day out.
If Israel, Turkey, Saudi Arabia, Iran, Palestine have reasons to hate each other, then why intervene? It's not like backing one side will stop the conflicts and bring peace as recent history showed us.
It's all geopolitics in the end, and Saudi Arabia not only has influence by virtue of controlling so much of the world's energy supply but because it's a relatively stable and consistent power and its regional aims are in line with the US and Europe's desired strategic outcomes.
There isn't a single European government that would rather Saudi Arabia be a democratic country right now.
Russia, China, and others aren't any different.