Thursday, 21 November 2019

A Turkey-backed Syrian rebel fighter stands inside an underground tunnel said to be made by the Syrian Democratic Forces (SDF) in Tal Abyad, Syria October 17, 2019. Turkey-backed Syrian rebel fighters discovered a series of tunnels in Tel Abyad in Syria on Thursday. The network is believed to be connecting areas previously controlled by Kurdish-led Syrian Democratic Forces (SDF). REUTERS/Mahmoud Hassano

Turkey-backed Syrian rebel fighters stand near underground tunnels said to be made by the Syrian Democratic Forces (SDF) in Tal Abyad, Syria October 17, 2019. The underground network is spread over kilometres and runs under houses, fighters said. REUTERS/Mahmoud Hassano

A Turkey-backed Syrian rebel fighter uses a stair to go down to an underground tunnel said to be made by the Syrian Democratic Forces (SDF) in Tal Abyad, Syria October 17, 2019. The Turkey-backed rebels said they were struggling to destroy the tunnels because they run under civilian houses. The tunnels also contain operation rooms, lounges, and food storage chambers. REUTERS/Mahmoud Hassano

A Turkey-backed Syrian rebel fighter uses a stair to go down to an underground tunnel said to be made by the Syrian Democratic Forces (SDF) in Tal Abyad, Syria October 17, 2019. Tel Abyad was taken over by Turkish-backed rebels during the assault against the Syrian-Kurdish YPG militia. Much of the fighting so far has taken place around the two border cities of Tel Abyad and Ras Al Ain. REUTERS/Mahmoud Hassano

Turkey-backed Syrian rebel fighters walk next to tunnels said to be made by the Syrian Democratic Forces (SDF) in Tal Abyad, Syria October 17, 2019. Turkey has agreed to pause its offensive for five days to let Kurdish forces withdraw from a "safe zone" Ankara had sought to capture. REUTERS/Mahmoud Hassano

Turkey-backed Syrian rebel fighters gesture as they stand at a back of a truck in the border town of Tal Abyad, Syria, October 17, 2019. Turkey has agreed to pause its offensive for five days to let Kurdish forces withdraw from a "safe zone" Ankara had sought to capture. REUTERS/Khalil Ashawi