People gather at the site of a reported rocket attack by regime forces and their allies on the village of Kafr Nabl, south of the jihadist-held Syrian province of Idlib on June 18, 2019.  / AFP / OMAR HAJ KADOUR
The village of Kafr Nabl, south of the Syrian province of Idlib, is the site of a reported rocket attack which contradicted a ceasefire. AFP

With Idlib in Assad's sights, Russia warns of 'false flag' chemical attacks