David Cameron paid tribute to the spirit of Boston's people today as he visited the site of the marathon bombing.
A month after the attack which killed three and wounded dozens more, the Prime Minister toured the memorials in Copley Square accompanied by Massachusetts Governor Deval Patrick.
"Everyone in the UK stands with your great city and your great people," he told reporters in the square.
Mr Cameron said it was crucial to challenge the "narrative of violent extremism".That meant "standing for the values that we believe in", such as freedom, democracy and diversity.
"We know how important it is to stand up and say the terrorists will not win," the premier added.
"We will never give in to terrorists."
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The cyclist said the victory was as sweet as his first win as he became the first Briton to win the race three times.
Local police confirmed the explosion, which occurred near Nuremberg.
Temperatures slide a couple of degrees