world

Adding to security issues, leaders from around the world will want to visit during the Olympics. The American delegation will be led by first lady Michelle Obama while President Barack Obama focuses on his re-election campaign.

"I've not heard any American who has said they were concerned about security here," said Susman, the ambassador. "London has made an effort to showcase London for the world and I think it's going to be terrific."

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Ian Deitch contributed to this story from Jerusalem and Nicholas McAnally from Paris.