Syrian President Bashar al Assad visits Syrian army troops in war-torn northwestern Idlib province, Syria, in this handout released by SANA on October 22, 2019. Syrian President Bashar al-Assad visited Syrian army troops in Idlib on Tuesday (October 22), the Syrian presidency said. SANA/Handout via REUTERS

Syrian President Bashar al Assad visits Syrian army troops in war-torn northwestern Idlib province, Syria, in this handout released by SANA on October 22, 2019. Assad made the remarks as he made a rare visit to a frontline of Syria's conflict, touring an area in war-torn northwestern Idlib province close to the last major bastion of Turkey-backed rebel forces. SANA/Handout via REUTERS

Syrian President Bashar al Assad visits Syrian army troops in war-torn northwestern Idlib province, Syria, in this handout released by SANA on October 22, 2019. Assad was seen surrounded by army commanders and soldiers in the town of Hobeit, which the army took in August as part of a Russian-led offensive to capture Idlib and its surroundings. SANA/Handout via REUTERS

Syrian President Bashar al Assad visits Syrian army troops in war-torn northwestern Idlib province, Syria, in this handout released by SANA on October 22, 2019. Syrian President Bashar al-Assad on Tuesday (October 22) denounced Turkey's leader as a thief for attacking the northeast of his country and reiterated a pledge to retake all areas lost to Damascus in years of civil war. SANA/Handout via REUTERS

Syrian President Bashar al Assad visits Syrian army troops in war-torn northwestern Idlib province, Syria, in this handout released by SANA on October 22, 2019. SANA/Handout via REUTERS

Syrian President Bashar al Assad visits Syrian army troops in war-torn northwestern Idlib province, Syria, in this handout released by SANA on October 22, 2019. SANA/Handout via REUTERS