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CALAIS, FRANCE - MAY 10: Wali Khan, aged 7 years, rests his head in his hands as he and his friends (l-r) Mohammed, Sardar, Ali and Mustafa, from Afghanistan, sit in Ali's tent in the refugee camp known as 'The Jungle' and share food and tea before the group head out to try and stow away on vehicles leaving the Port of Calais and heading to the UK where they hope to seek asylum, on May 10, 2016 in Calais, France. Wali, spent the entire previous night out trying to get to the UK and explained that he had been tear-gassed by French police, leaving him too tired to go out again on this occasion. The British government is currently considering a move to take in up to 3000 children from refugee camps around the world and around 100 from Calais after coming under pressure to rethink their stance on not taking in vulnerable and unaccompanied child refugees. (Photo by Mary Turner/Getty Images)

CALAIS, FRANCE - MAY 10: Wali Khan, aged 7 years, rests his head in his hands as he and his friends (l-r) Mohammed,  Sardar, Ali and Mustafa, from Afghanistan, sit in Ali's tent in the refugee camp known as 'The Jungle' and share food and tea before the group head out to try and stow away on vehicles leaving the Port of Calais and heading to the UK where they hope to seek asylum, on May 10, 2016 in Calais, France. Wali, spent the entire previous night out trying to get to the UK and explained that he had been tear-gassed by French police, leaving him too tired to go out again on this occasion. The British government is currently considering a move to take in up to 3000 children from refugee camps around the world and around 100 from Calais after coming under pressure to rethink their stance on not taking in vulnerable and unaccompanied child refugees.  (Photo by Mary Turner/Getty Images)