Afghan army soldiers take part in their graduation ceremony at Kabul Military Training Center (KMTC) in Kabul, capital of Afghanistan, May 27, 2019. A total of 2,768 newly graduated Afghan officers and soldiers joined the country's national army on Monday, according to an army source. (Photos: Xinhua)

Afghan army soldiers take part in their graduation ceremony at Kabul Military Training Center (KMTC) in Kabul, capital of Afghanistan, May 27, 2019. A total of 2,768 newly graduated Afghan officers and soldiers joined the country's national army on Monday, according to an army source.

Afghan army soldiers take part in their graduation ceremony at Kabul Military Training Center (KMTC) in Kabul, capital of Afghanistan, May 27, 2019. A total of 2,768 newly graduated Afghan officers and soldiers joined the country's national army on Monday, according to an army source.

Afghan army soldiers take part in their graduation ceremony at Kabul Military Training Center (KMTC) in Kabul, capital of Afghanistan, May 27, 2019. A total of 2,768 newly graduated Afghan officers and soldiers joined the country's national army on Monday, according to an army source.

An Afghan army soldier receives his certificate during a graduation ceremony at Kabul Military Training Center (KMTC) in Kabul, capital of Afghanistan, May 27, 2019. A total of 2,768 newly graduated Afghan officers and soldiers joined the country's national army on Monday, according to an army source.

Afghan army soldiers take part in their graduation ceremony at Kabul Military Training Center (KMTC) in Kabul, capital of Afghanistan, May 27, 2019. A total of 2,768 newly graduated Afghan officers and soldiers joined the country's national army on Monday, according to an army source.