Concerns over security at the 2012 Olympics has prompted the United States to send 1,000 agents, including 500 from the FBI, to provide protection for its athletes in London. The Guardian is reporting this morning that American officials are apprehensive over British anti-terrorism laws and the effectiveness of their police force to handle threats. Their British counterparts, however, are concerned about the U.S. operating outside its jurisdiction. Gordon Corera, the BBC’s security correspondent, has the latest from London.