Israel's Prime Minister says his country's forces had dealt what he called "severe blows" to Iranian and Syrian forces after an Israeli warplane was shot down by Syrian anti-aircraft fire.<br /> In a Cabinet meeting on Sunday, Benjamin Netanyahu added that he would continue to take action against further aggression. <br />His tough words came a day after Israel lost an F-16 to enemy fire as it returned from a bombing raid on Iran-backed positions in Syria.<br />This sparked Israel to launch its biggest airstrikes on Syria in decades, which targeted about a dozen Iranian and Syrian targets, including air defense systems.<br />Israel is concerned about what it sees as an increased Iranian involvement along its borders with Syria and Lebanon. <br />Iran has insisted it is backing the Syrian government in the country's civil war and is not seeking wider conflict. <br />