Malala, who moved to Britain in 2012 after being shot in the head in Pakistan by the Taliban for refusing to quit school, won acclaim for her advocacy of women's right to education and becoming the youngest winner of the Nobel Peace Prize.

Reuniting at a gleaming public library in the northeast English city of Newcastle, 18-year-old Malala and Muzoon, 17, pledged to campaign together for access to education for Syrian refugee children.

The setting was a far cry from the sprawling lines of tents comprising the Zaatari camp for Syrian refugees in the Jordanian desert, where the pair first met in early 2014.

Malala now lives in England's second city, Birmingham, where she was treated after being shot, and Muzoon is among the first Syrians from refugee camps in the Middle East to have come to Britain.

Since the two first met, the number of registered Syrian refugees has doubled to almost 4.4 million people, according to the United Nations High Commissioner For Refugees (UNHCR).

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