A Yemeni boy lines up a round of ammunition atop the barrel of a Kalashnikov assault rifle, while another stands with Kalashnikov over a crate of juice boxes during a tribal meeting in the Houthi rebel-held capital Sanaa on September 21, 2019, as tribesmen donate rations and funds to rebel fighters. AFP
A Yemeni boy poses with a Kalashnikov assault rifle during a gathering of newly-recruited Houthi fighters in the capital Sanaa, to mobilise more fighters to battlefronts in the war against pro-government forces in several Yemeni cities, on July 16, 2017. AFP
Yemeni children carrying weapons take part in a gathering organised by Houthi rebels to mobilise more fighters to battlefronts to fight pro-government forces, on June 18, 2017, in the capital Sanaa. AFP
An armed Yemeni boy poses for a picture during a tribal gathering loyal to the Houthi rebels in the Bani Al Harith area, north of Sanaa, on August 17, 2014. AFP
An armed Yemeni youth in the Houthi movement that controls Sanaa, sits amid the rubble of the Iranian ambassador's home in the Yemeni capital on December 5, 2014. AFP
A Yemeni boy lines up a round of ammunition atop the barrel of a Kalashnikov assault rifle, while another stands with Kalashnikov over a crate of juice boxes during a tribal meeting in the Houthi rebel-held capital Sanaa on September 21, 2019, as tribesmen donate rations and funds to rebel fighters. AFP
A Yemeni boy poses with a Kalashnikov assault rifle during a gathering of newly-recruited Houthi fighters in the capital Sanaa, to mobilise more fighters to battlefronts in the war against pro-government forces in several Yemeni cities, on July 16, 2017. AFP
Yemeni children carrying weapons take part in a gathering organised by Houthi rebels to mobilise more fighters to battlefronts to fight pro-government forces, on June 18, 2017, in the capital Sanaa. AFP
An armed Yemeni boy poses for a picture during a tribal gathering loyal to the Houthi rebels in the Bani Al Harith area, north of Sanaa, on August 17, 2014. AFP
An armed Yemeni youth in the Houthi movement that controls Sanaa, sits amid the rubble of the Iranian ambassador's home in the Yemeni capital on December 5, 2014. AFP
A Yemeni boy lines up a round of ammunition atop the barrel of a Kalashnikov assault rifle, while another stands with Kalashnikov over a crate of juice boxes during a tribal meeting in the Houthi rebel-held capital Sanaa on September 21, 2019, as tribesmen donate rations and funds to rebel fighters. AFP