What role can women play in the fight against terrorism? This is one of the key themes of the Women in the World summit when it comes to London for the first time next month. The event has taken place in the US for the last six years and got bigger each time.

It is the brainchild of the Tina Brown, former editor of Vanity Fair and the New Yorker.

Tina Brown also talked about her feelings on Hillary Clinton's presidency campaign and said although Clinton would be "fully, fully able to be president", the process of running itself is "wounding" and "incredibly difficult" as she is "judged more harshly".

"If I were Hillary, I wouldn't run...running for the presidency is so wounding," said Tina Brown.

Instead, she said Hilary Clinton could "could devote herself to the causes she cares about... issues like the global women's movement".