Syrian state television, rebel groups and conflict monitors say fierce fighting and air strikes are continuing in several parts of northern Syria.<br /><br /> Sites in Aleppo and Idlib province have been hit on Sunday. <br /><br /> It comes after scores of people were reportedly killed in aerial bombardments on Saturday.<br /><br /> Turkish air strikes killed 20 ISIL militants in northern Syria on Saturday according to Turkish media citing the Turkish military.<br /><br /> <br /><br /><br /><br /> Turkish air strikes kill 20 Islamic State fighters in Syria: CNN Turk https://t.co/rhlbOyuCJh— Reuters World (@ReutersWorld) September 11, 2016<br /> <br /><br /> <br /><br /><br /><br /> The UK-based Syrian Observatory for Human Rights said several civilian rescuers were injured when a strike in the town of Saraqeb hit a civil defence centre.<br /><br /> <br /><br /><br /><br /> #Turkey hits Daesh targets in northern #Syria https://t.co/sD9obLVbD9 pic.twitter.com/j5XgWVhw8b— ANADOLU AGENCY (ENG) (@anadoluagency) September 11, 2016<br /> <br /><br /> <br /><br /><br /><br /> When is the truce due to start?<br /><br /> <br /><br /><br /><br /> A humanitarian truce, brokered by the US and Russia in Geneva, is due to come into effect at sundown on Monday.<br /><br /> However, Turkish officials say the two-week old “Operation Euphrates Shield” will “continue decisively”.<br /><br /> “It is our duty to our people to finish off Daesh (ISIL) in Syria and to reduce them to a level where they can’t carry out attacks in our country. Euphrates Shield is the first step in that,” Turkish President Recep Tayyip Erdogan said in a televised address.<br /><br /> <br /><br /><br /><br /> Erdogan says PKK trying to disrupt Turkey's operation in Syria https://t.co/AVgZKJKTSG— Reuters World (@ReutersWorld) September 11, 2016<br /> <br /><br /> <br /><br /><br /><br /> Rebel factions to welcome deal<br /><br /> <br /><br /><br /><br /> Syrian rebel factions are to issue a statement welcoming the US-Russia deal for a ceasefire and aid deliveries.<br /><br /> However, opposition officials say there are reservations about the handling of violations on the government side.<br /><br /> Rebel groups believe they are treated unfairly by the deal and complain they were not consulted about it, commentators say. <br /><br /> “A big part of the agreement serves the regime and does not apply pressure on it and does not serve the Syrian people,” said Zakaria Malahifji of the Aleppo.-based rebel group Fastaqim.<br /><br /> <br /><br /><br /><br /> Does the ceasefire cover everyone?<br /><br /> <br /><br /><br /><br /> No.<br /><br /> It does not cover fighters with the jihadist groups ISIL or Jabhat Fatah al-Sham, previously known as the Nusra Front.<br /><br /> The group broke its formal allegiance to al Qaeda and has changed its name.<br /><br /> On Saturday the US warned insurgents they would face “dire consequences” if they cooperate with Jabhet Fatah al-Sham.<br /><br /> The group fought alongside a range of mainstream and Islamist rebel groups during intense battles in recent weeks in southern Aleppo.<br /><br /> <br /><br /><br /><br /> What they are saying<br /><br /> <br /><br /><br /><br /> “The factions welcome a ceasefire and welcome the incoming of aid but have reservations about some points – what are the sanctions if the regime does not abide by it?” – Zakaria Malahifji of the Aleppo.-based rebel group Fastaqim.<br />