A Syrian tank is seen at the outskirts of the rebel-held town of Jisreen in the Eastern Ghouta countryside of Damascus, capital of Syria, on March 11, 2018. The Syrian army on Sunday effectively split the rebel-held areas in the Eastern Ghouta countryside of Damascus into three sectors, laying a siege on a major rebel bastion, according to the War Media, the media wing of the Syrian army. (Xinhua/Ammar Safarjalani)

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