DOMINO EFFECT:

Yemen president vows to quit in 2013 (GlobalPost, February 2, 2011)

A day after Hosni Mubarak of Egypt vowed to quit politics amid mass protests, President Ali Abdullah Saleh of Yemen has said that he will not seek to extend his presidency at elections in 2013.

Yemen, a key U.S. ally against Al Qaeda, is one of several Arab nations weathering unprecedented popular protests in recent days driven by disaffection with oppressive regimes and poor living conditions.