Seriously dude, you seem like you're about 15 years old. You don't focus on and read other people's posts. You're questions are simplistic, black and white world type questions. I'm not going to waste much more time repeating things I've said, and there are far more intelligent adults I should spend time debating.
Short version:
No, we're not "leaving the middle east". Anyone who is even moderately well informed, knows we have permanent bases throughout the persian gulf, in relatively stable friendly countries. Its not my job to educate you about US military posture in the middle east.
Second, yes, short term, we do need to focus on where al qaeda's core strenghth and leadership is: south asia, pakistan, afghanistan. Your president diverted us to Iraq, a country with no ties to international anti-american jihadists.
Third, a long term plan is energy independence. So we don't have to get involved in the affairs of some pissant countries with Arab monarchies and dictators. At that point, if you fell compelled to go fight for the Saudi Royal family, then leave and go fight for them. I won't give a crap about the Saudis when we don't need their oil anymore.