Syrian army showcases weapons found while combing formerly rebel-held areas in the countryside of the capital Damascus and the southern province of Daraa at a military base in Damascus on May 21, 2019. (Photo: Xinhua)

Syrian army showcases weapons found while combing formerly rebel-held areas in the countryside of the capital Damascus and the southern province of Daraa at a military base in Damascus on May 21, 2019. (Photo: Xinhua)

Syrian army showcases weapons found while combing formerly rebel-held areas in the countryside of the capital Damascus and the southern province of Daraa at a military base in Damascus on May 21, 2019. (Photo: Xinhua)

Syrian army showcases weapons found while combing formerly rebel-held areas in the countryside of the capital Damascus and the southern province of Daraa at a military base in Damascus on May 21, 2019. (Photo: Xinhua)

Syrian army showcases weapons found while combing formerly rebel-held areas in the countryside of the capital Damascus and the southern province of Daraa at a military base in Damascus on May 21, 2019. (Photo: Xinhua)

Syrian army showcases artifacts found while combing formerly rebel-held areas in the countryside of the capital Damascus and the southern province of Daraa at a military base in Damascus on May 21, 2019. (Photo: Xinhua)