Police officers block a road leading to Tham Luang cave complex in the northern province of Chiang Rai

Police officers block a road leading to Tham Luang cave complex in the northern province of Chiang Rai

Police officers block a road leading to Tham Luang cave complex in the northern province of Chiang Rai, Thailand, July 8, 2018. REUTERS/Soe Zeya Tun