In Sanaa today, a Yemeni army officer reacts after he and other officers joined anti-government protesters demanding the resignation of President Ali Abdullah Saleh. Muhammed Muheisen/AP hide caption

itoggle caption Muhammed Muheisen/AP

Secretary of State Hillary Clinton is welcomed by Yemen's foreign minister, Abu Bakr al-Qurbi, at Sanaa airport upon her arrival earlier today (Jan. 11, 2011). Gamal Noman/AFP/Getty Images hide caption

itoggle caption Gamal Noman/AFP/Getty Images