A minute's silence has taken place at a memorial event marking one year since the Boston Marathon bombings.
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Robert Weighton and Alfred Smith only became pen pals two years ago - and today Britain's oldest men both celebrated their 109th birthdays.
An "erratic" driver sparked a security alert after ploughing into a police car near the US Congress and nearly mowing down several officers.
Thousands of people have linked hands on Westminster Bridge in a show of solidarity - one week after the terror attack in the capital.