Israeli rockets struck nine Syrian targets Sunday in response to a Syrian missile attack in the Golan Heights that killed a teenager. Mohammed Karaka, 13, was killed by the Syrian missile. His father was delivering water to a construction site in the region when their vehicle was struck. Two other civilians were also injured. An Israeli Defense Forces spokesperson said it fired guided missiles. The exchange of fire marks the most significant altercation between the two countries in three years. “This is a very severe event and marks another step in deterioration on the border with Syria,” said former military official Eyal Ben Reuven.