The war in Syria's northwest corner is heating up again

Dozens have been killed and more than 150,000 people have fled a Russian-backed offensive by the Syrian government in the northwest corner of the war-torn country.Russia's patience has been wearing thin over what it views as Turkey's failure to curb a jihadist group in the region, and Damascus is determined to recover “every inch” of Syria.Visit INSIDER's homepage for more stories.BEIRUT (Reuters) - A Russian-backed Syrian government offensive in the rebel-held northwest has killed dozens of people and forced more than 150,000 to flee, the biggest escalation in the war between President Bashar al-Assad and his enemies since last summer.Government barrel-bombing and Russian air strikes have been accompanied by limited ground assaults, straining a Russian-Turkish deal that spared the region from an offensive in September and generating new concerns for its 3 million people.