HELMAND, July 18, 2016 (Xinhua) -- Soldiers take part in a military operation in Nad Ali district of Helmand province, Afghanistan, July 18, 2016. Afghan security forces have obviously adopted an aggressive position against anti-government militants as more than 100 armed insurgents have been killed mostly by air strikes since Saturday, according to officials. (Xinhua/Abdul Aziz Safdari)
