LONDON — Pakistani teenager Malala Yousafzai, who won a Nobel peace prize for education campaigning, called on world leaders on Thursday to give 12 years of free schooling to every child following a major education summit, saying this was critical for girls. The World Education Forum, which ended in South Korea on Thursday, involved government ministers and non-government organizations from 160 countries to set education goals for the next 15 years to be embedded in a new set of global targets. Malala, 17, who has become a leading education campaigner since surviving an assassination attempt by the Taliban in 2012, in a statement urged world leaders to back these goals, saying 12 years of free education was critical, particularly for girls. — Reuters