Security Is Tightened Ahead Of G20 Leaders' summit

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Security Is Tightened Ahead Of G20 Leaders' summit

Police officers carry out security checks in a building near the ExCel Centre ahead of the G20 summit on March 31, 2009 in London. World leaders are gathering in London G20 summit, amid an unprecedented security operation to protect the meeting from protests and the threat of terrorist attacks. The bill for the security operation is thought to top GBP7m.
(March 31, 2009 - Source: WPA Pool/Getty Images Europe)