The Syrian military rushed reinforcements to the northwest and launched airstrikes Sunday in an attempt to push back insurgents who seized the country’s largest city of Aleppo, as Iran pledged to help the government counter the surprise offensive. Iran has been a key political and military ally of Syrian President…

The Syrian military rushed in reinforcements and struck Idlib city Sunday to push back insurgents from advancing farther after seizing Aleppo and surrounding strategic locations in an adjacent province in a surprise offensive.