UN Secretary Antonio Guiterres called for an immediate ceasefire in war-stricken northwestern Syria on Saturday, as insurgents launched a rare fightback against pro-government forces in the city of Aleppo. According to the Syrian Observatory for Human Rights (SOHR), over 205 pro-government fighters and 220 anti-regime combatants have been killed in fighting in the past week. A total of nearly 100 have been killed from both sides in the past 24 ...