Afghan security force members take part in a military operation in Sayad district of Sari Pul province, Afghanistan, Feb. 16, 2019. Afghan government forces have killed 20 militants and overrun a main base of the Taliban outfit in Sayad district of Afghanistan's northern Sari Pul province following fierce fighting, provincial police chief Abdul Karim Baqizoi said Sunday. (Xinhua/Mohammad Jan Aria)