Dayuhan,

Good catch the cited article, the last paragraph says it all for the Yemen:
Like their counterparts in Tunisia and Egypt, the demonstrators who have taken to the streets in Yemen over the past months want a new political order, not more of the same. They want a transitional government of national unity, composed of technocrats, that will function until new parliamentary and presidential elections can be held. This, in effect, means the establishment of a democratic order -- an outcome that Riyadh, for ideological and practical reasons, will be reluctant to midwife. This leaves Saudi Arabia caught between two contradictory policy imperatives: maintaining its influence in Yemen and rendering the country sufficiently stable so as not to pose a threat. In Yemen, Riyadh is confronted with difficult choices and no easy solutions.
We know Saudi Arabia supported Mubarak in Egypt till the end, then acknowledged his removal was popular and granted an unconditional US$4 billion loan. So they can move rapidly when needed to change partners.

I wonder if President Saleh will be able to exit his hospital.