Libya : No sectarian war there, No Shias there, and the situation is 1000 better than Iraq & Syria (they are our neighbours and we know everything going there, thnx it is just political war NOT sectarian one).
Sunni Yemenis : there are no Sunni Yemenis armed right now (Like Syrians ... ) , and all Yemenis has Ak-47 and some other weapons since it is allowed for them by Law, and that includes Zaidi Yemeni Tribes Who even fought Houthis many Times and supported Yemeni Army against them, check for e.g. Dammage War where Zaidis Tribes defended small Sunni village against Houthis (Hashed a Zaidi Tribe was one of the participants).
Syria : KSA is supporting FSA, and right now I was reading a Speech of one of FSA Divisions southest Syria supporting KSA plan for no-fly zone + buffer zones northern Syria.
Saying KSA is supporting AQ/Al-Nusra is like saying Turkey is supporting PKK.
Talking about FSA support, are you Pro-Assad ?!