Syrian soldiers are seen inside the Tabqa airbase in the Tabqa city of Raqqa province in northern Syria on Oct. 16, 2019. The Syrian army has entered the city of Tabqa in the northern countryside of Raqqa Province, as part of the Syrian army's move to enter Kurdish-held areas to counter the ongoing Turkish assault in the region. (Str/Xinhua)

Syrian soldiers are seen inside the Tabqa airbase in the Tabqa city of Raqqa province in northern Syria on Oct. 16, 2019. The Syrian army has entered the city of Tabqa in the northern countryside of Raqqa Province, as part of the Syrian army's move to enter Kurdish-held areas to counter the ongoing Turkish assault in the region. (Str/Xinhua)

Missiles are seen inside the Tabqa airbase in the Tabqa city of Raqqa province in northern Syria on Oct. 16, 2019. The Syrian army has entered the city of Tabqa in the northern countryside of Raqqa Province, as part of the Syrian army's move to enter Kurdish-held areas to counter the ongoing Turkish assault in the region. (Str/Xinhua)