Lebanese police officers place cement blocks around the government house in downtown Beirut, Lebanon, Thursday, Jan. 20, 2011. Lebanese troops tightened security around the prime minister's office and... more 
Lebanese police officers place cement blocks around the government house in downtown Beirut, Lebanon, Thursday, Jan. 20, 2011. Lebanese troops tightened security around the prime minister's office and other government buildings Thursday as a political crisis deepened over a U.N.-backed tribunal investigating the 2005 assassination of a former prime minister. less 
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Associated Press | Photo By Bilal Hussein
Sun, Jan 23, 2011 7:49 PM EST