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Yemeni children take part in a demonstration outside the house of Ahmed Ali Abdullah Saleh (portrait), the son of Yemen's former president Ali Abdullah Saleh who stepped down in early 2012, calling for presidential elections and demanding the son of the ex-strongman to run as a candidate, on March 13, 2015 in Sanaa. AFP PHOTO / MOHAMMED HUWAIS (Photo credit should read MOHAMMED HUWAIS/AFP/Getty Images)

Yemeni children take part in a demonstration outside the house of Ahmed Ali Abdullah Saleh (portrait), the son of Yemen's former president Ali Abdullah Saleh who stepped down in early 2012, calling for presidential elections and demanding the son of the ex-strongman to run as a candidate, on March 13, 2015 in Sanaa. AFP PHOTO / MOHAMMED HUWAIS        (Photo credit should read MOHAMMED HUWAIS/AFP/Getty Images)