Schoolgirl Malala Yousafzai, who survived an assassination attempt by the Taliban, has said conflict-ridden countries should fight only about educating their children and swap guns for pens.
The 16-year-old received a standing ovation after speaking at an event to launch her memoir I Am Malala in central London with her comments provoking regular outbreaks of applause at the Southbank Centre.
The teenager, who was shot in the head while travelling on a school bus in Pakistan last October, told the audience: "You are not powerful if you have a gun, because with a gun you can only kill.
"You are powerful when you have a book, when you have pen. Because through a pen you can save lives. And that's the change we want to bring in our society."