A Yemeni soldier stands guard at a street leading to the presidential palace in Sanaa, Yemen, Tuesday, Dec. 25, 2012. Gunmen on motorbikes assassinated two Yemeni army officers in the c

 

              A Yemeni soldier stands guard at a street leading to the presidential palace in Sanaa, Yemen, Tuesday, Dec. 25, 2012. Gunmen on motorbikes assassinated two Yemeni army officers in the c
A Yemeni soldier stands guard at a street leading to the presidential palace in Sanaa, Yemen, Tuesday, Dec. 25, 2012. Gunmen on motorbikes assassinated two Yemeni army officers in the country's capital Tuesday while clashes between the military and tribal fighters loyal to al-Qaida in a northeastern province killed three soldiers and several tribesmen, officials said. (AP Photo/Hani Mohammed)