Afghan boys read books inside a mobile library bus in Kabul, Afghanistan July 2, 2019. Picture taken July 2, 2019. The mobile library bus offers pupils and street kids free access to children's books, which are in short supply at public schools and libraries. REUTERS/Mohammad Ismail

School boys board on a mobile library bus in Kabul, Afghanistan July 2, 2019. Picture taken July 2, 2019. It also offers one of the few spaces outside the home that children can use in a city where fear is increasingly keeping residents behind closed doors. REUTERS/Mohammad Ismail

Afghan boys read books inside a mobile library bus in Kabul, Afghanistan July 2, 2019. Picture taken July 2, 2019. The mobile library bus offers pupils and street kids free access to children's books, which are in short supply at public schools and libraries. REUTERS/Mohammad Ismail

Afghan boys read books inside a mobile library bus in Kabul, Afghanistan July 2, 2019. Picture taken July 2, 2019. It also offers one of the few spaces outside the home that children can use in a city where fear is increasingly keeping residents behind closed doors. REUTERS/Mohammad Ismail

School boys are seen inside inside a mobile library bus in Kabul, Afghanistan July 2, 2019. Picture taken July 2, 2019. The mobile library bus offers pupils and street kids free access to children's books, which are in short supply at public schools and libraries. REUTERS/Mohammad Ismail

A school boy looks out of a mobile library bus window in Kabul, Afghanistan July 2, 2019. Picture taken July 2, 2019. It also offers one of the few spaces outside the home that children can use in a city where fear is increasingly keeping residents behind closed doors. REUTERS/Mohammad Ismail