Yousafzai survived being shot in the head aged 15 by a Pakistani Taliban gunman after she was targeted for her campaign against the Taliban's efforts to deny girls education.

Since winning the Nobel Peace Prize in 2014 she has become a global symbol of the resilience of women in the face of repression.

"I cannot fathom the injustice that the women in Afghanistan are facing. They're going through a gender apartheid," Yousafzai told Reuters.