David Cameron pays respects at Ground Zero

David Cameron and his wife Samantha have paid their respects to the 9/11 terror attack victims during a visit to New York City’s Ground Zero.
Mrs Cameron, who had been in the city on the day of the attacks, laid a posy of white roses near the engraved name of British victim Katherine Wolf.
The prime minister said the memorial was “the place to remember why” action in Afghanistan had been necessary.
The visit came on the final day of an official state visit to the US. (BBC)