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TOPSHOT - A Syrian man stands in the rubble of destroyed buildings following an air strike in Aleppo's rebel-controlled neighbourhood of Karm al-Jabal on September 18, 2016.
Syria's ceasefire was on the brink of collapsing on September 18, after a US-led coalition strike killed dozens of regime soldiers and Aleppo city was hit by its first raids in nearly a week. / AFP PHOTO / KARAM AL-MASRIKARAM AL-MASRI/AFP/Getty Images
TOPSHOT - A Syrian man stands in the rubble of destroyed buildings following an air strike in Aleppo's rebel-controlled neighbourhood of Karm al-Jabal on September 18, 2016.
Syria's ceasefire was on the brink of collapsing on September 18, after a US-led coalition strike killed dozens of regime soldiers and Aleppo city was hit by its first raids in nearly a week. / AFP PHOTO / KARAM AL-MASRIKARAM AL-MASRI/AFP/Getty Images

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    Fighting returns to Syria as truce unravels

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Fighting returns to Syria as truce unravels

At least 20 people are dead in Aleppo, Syria after a new round of airstrikes. CNN's Frederik Pleitgen reports.

Fighting returns to Syria as truce unravels

At least 20 people are dead in Aleppo, Syria after a new round of airstrikes. CNN's Frederik Pleitgen reports.