Cavguy,
Having read many of the links here I hazard an "armchair" answer.
Q1. No, the primary responsibility lies with the people of the Yemen, who appear to be poorly served by their thirty year long government.
Q2. No, part of the problem is the Saudi's involvement, pushing their version of Islam, bribing tribal chiefs; note the revolt by the Al-Huthi is by a Shia tribe and whilst the Saudis have a military capability is it one that is effective in aggressive action? They maybe part of the solution.
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