REUTERS/Firas Makdesi A general view shows the damage at the site of a suicide attack in Tahrir Square, in central Damascus, Syria July 2, 2017. REUTERS/Firas Makdesi A view shows the damage at the site of a suicide attack in Tahrir Square, in central Damascus, Syria July 2, 2017. REUTERS/Firas Makdesi An army soldier secures the site of a suicide attack in Tahrir Square, in central Damascus, Syria July 2, 2017. REUTERS/Firas Makdesi People inspect the damage at the site of a suicide attack in Tahrir Square, in central Damascus, Syria July 2, 2017. REUTERS/Firas Makdesi A general view shows the damage at one of the blast sites in Damascus, Syria July 2, 2017. REUTERS/Omar Sanadiki A damaged truck is pictured at one of the blast sites in Damascus in this handout picture posted on SANA on July 2, 2017, Syria. SANA/Handout via REUTERS A view shows the damage at one of the blast sites in Damascus in this handout picture posted on SANA on July 2, 2017, Syria. SANA/Handout via REUTERS Damaged cars are seen at one of the blast sites in Damascus in this handout picture posted on SANA on July 2, 2017, Syria. SANA/Handout via REUTERS Damaged buses are pictured at one of the blast sites in Damascus in this handout picture posted on SANA on July 2, 2017, Syria. SANA/Handout via REUTERS People inspect the site of a car bomb blast in Damascus in this handout picture posted on SANA on July 2, 2017, Syria.