The Syrian military rushed reinforcements to the country’s northwest and launched airstrikes on a major city Sunday in an attempt to push back insurgents who seized the country’s largest city of Aleppo in a surprise offensive in recent days. The insurgency, led by jihadi group Hayat Tahrir al-Sham, launched their campaign on Wednesday with a two-pronged attack on Aleppo and the countryside around Idlib, before moving toward neighboring Hama province. On Sunday, government troops created a “strong defensive line” in northern Hama, according to Britain-based opposition war monitor the Syrian Observatory for Human Rights, as they attempted to stall the...