Secretary of State Hillary Clinton, a senator and former First Lady, has offered a tough pragmatism on national security matters and called for reviving U.S. credibility in the world.

While some reports attribute Kenya’s postelection crisis to tribalism, most analysts see weak political institutions at the root of problems.

Countries in sub-Saharan Africa lose billions of dollars each year through corruption, say analysts. Local and international efforts to reform governance have been inconsistent.