David Cameron has joined French president Francois Hollande at the scene of one of the Paris atrocities as a major anti-terror operation continued in neighbouring Belgium.
The UK prime minister visited the Bataclan concert hall, where scores of people were killed in the massacre by Islamic State (IS) gunmen.
The two leaders viewed the floral tributes placed outside the music venue, where fans of rock group Eagles Of Death Metal were gunned down.
Mr Cameron said the two men stood "shoulder to shoulder" and he paid tribute to the "courage of the French people" following the marauding attack on their capital.
His talks with Mr Hollande in Paris come as the French president starts an intensive push to create a "grand coalition" to destroy IS - also known as ISIL, ISIS and Daesh - which will take him to Washington and Moscow in the coming days.
