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Nobel peace prize winner Malala Yousafzai has dedicated her award to "voiceless" children around the world.
The teenager, who at 17 is the youngest person ever to receive the coveted prize, also called on the Indian and Pakistani prime ministers to attend the award ceremony for the sake of peace.
Malala hit headlines around the world after she survived being shot in the head by a Taliban fighter in October 2012 for going to school.
She later had treatment in Britain for her injuries and went on to make a full recovery.
Malala is now a dedicated campaigner for children's rights to education.
Malala Yousafzai has revealed that she was in an A-level chemistry class when she found out she had won the Nobel Peace Prize.
The Pakistani campaigner, 17, said she was "totally sure" she had not won the award, only for a teacher to appear with the good news.
Malala attends school in Edgbaston, Birmingham after recovering from being shot in the head by a Taliban gunman in 2012.
Malala Yousafzai will be remembered by historians as starting a "liberation movement" for boys and girls all over the world, Gordon Brown has said.
The former Prime Minister said Malala and Indian activist Kailash Satyarthi were "the greatest children's champions in the world" as well as "two of my great friends".
A United Nations spokesperson has tweeted Secretary General Ban Ki-moon's congratulations to Nobel Peace Prize winners Malala Yousafzai and Kailash Satyarthi.
Former Prime Minister Gordon Brown has congratulated Malala Yousafzai and joint Nobel Peace Prize winner Indian child rights campaigner Kailash Satyarthi, calling them "the world's greatest children's champions".
The winner of the 2011 Nobel Peace Prize, Tawakkol Karman has responded to Malala Yousafzai's award of the prize by tweeting a photo of herself with the teenager.
Karman is a Yemeni journalist, politician and human rights activist who played a prominent role in the 'Arab Spring' uprising in her country.
While Malala Yousafzai may garner most of the attention after today's Nobel Peace Prize announcement, the award was also shared with an Indian human rights activist called Kailash Satyarthai.
His organisation, Bachpan Bachao Andolan, describes itself as "the largest grassroots movement against child labour, child trafficking and child servitude".
The movement, known in English as 'Save the Childhood', is credited with freeing and rehabilitating tens of thousands of children who faced a miserable existence.
Here is how the Nobel Peace Prize Committee described Satyarthai's work:
The Nobel Prize Committee paid tribute to Malala Yousafzai's "heroic struggle" for girls' rights.
Teenage campaigner Malala Yousafzai, who survived being shot in the head in Pakistan when she was just 15, has scooped the Nobel Peace Prize.
She was awarded the prize jointly with Indian children's rights activist Kailash Satyarthi.
Latest ITV News reports
The Pakistani teenager survived an assassination attempt to today become the youngest ever recipient of the Nobel Peace Prize.