Your rant is off target.
There is
NOTHING to prevent the ME countries from banding together on their own and take care of Syria. Did the UN sanctioned the wars between the Arabs and Israel? If not, then what make you think the UN have any physical means to prevent an ad-hoc alliance by ME countries to take care of local threats to regional stability? The African Union is an organization whose memberships acknowledged that it has the right to intervene in a member's country for humanitarian and security grounds. The UN did not sanctioned such a right.
The African Union
So what is preventing the Muslims of the ME from doing the same? How about apathy and a convenient scapegoat, the UN?