Security personnel stand guard at parliament buildings in Kenya's capital Nairobi March 22, 2011. Kenya's economy has good prospects this year after expanding at an estimated 5.4 percent in 2010 but faces hurdles such as inflation, a depreciating shilling, high oil prices and drought, Kenya's President Mwai Kibaki said. [Photo/Agencies]

Sailors aboard the aircraft carrier USS George Washington (CVN 73) scrub the flight deck during a counter-measure wash down after the ship departed her forward operating port at Commander, Fleet Activities Yokosuka, in this photograph taken and released on March 22, 2011. The George Washington is underway in response to the earthquake and tsunami that struck Japan on March 11. [Photo/Agencies]