On Sunday evening, a U.S. warplane shot down a Syrian jet after it bombed American-backed rebels in northern Syria. This marked the first time the United States has downed a Syrian warplane since the start of the country’s civil war in 2011. On Tuesday, the Pentagon announced that the United States had shot down an Iranian-made drone in the country’s southeast, where American personnel have been training anti-Islamic State fighters.
Since President Donald Trump took office, the U.S. military has struck the Syrian regime or its allies at least five times, in most cases to protect U.S.-backed rebels and their American advisers. Even if the Pentagon may not want to directly engage Syrian forces or their Russian and Iranian-backed allies, there’s a danger of accidental escalation, especially as various forces continue to converge on eastern and southern Syria to reclaim strategic territory from ISIS. Russia, for its part, angrily condemned the U.S. action and threatened on Monday to treat all coalition planes in Syria as potential targets.
But the dangers are perhaps particularly acute when it comes to Iran, which made dramatic battlefield moves of its own on Sunday, when it launched several missiles from inside Iran against ISIS targets in eastern Syria. Officially, Iran’s Revolutionary Guards said the volley of missiles fired at Deir Ezzor province was a response to a pair of attacks by ISIS in Tehran on June 7, which killed 18 people and wounded dozens; the attacks marked the first time that ISIS had struck inside Iran. But the Iranian regime had several less-dramatic means to exact revenge against ISIS targets in Syria—after all, there’s no shortage of Iranian allies operating in the war-ravaged country.