Tensions rise in Syria as Russia, Iran send U.S. warnings

BEIRUT — Russia on Monday threatened aircraft from the U.S.-led coalition in Syrian-controlled airspace and suspended a hotline intended to avoid collisions in retaliation for the U.S. military shooting down a Syrian warplane.

The U.S. said it had downed the Syrian jet a day earlier after it dropped bombs near the U.S.-backed Syrian Democratic Forces conducting operations against the Islamic State group, adding that was something it would not tolerate.

The downing of the warplane — the first time in the six-year conflict that the U.S. has shot down a Syrian jet — came amid another first: Iran fired several ballistic missiles Sunday night at IS positions in eastern Syria in what it said was a message to arch rival Saudi Arabia and the United States.

The developments added to already-soaring regional tensions and reflect the intensifying rivalry among the major players in Syria’s civil war that could spiral out of control just as the fight against the Islamic State group in its stronghold of Raqqa is gaining ground.

Russia, a key ally of Syrian President Bashar Assad, called on the U.S. military to provide a full accounting as to why it decided to shoot down the Syrian Su-22 bomber.

The U.S. military confirmed that one of its F-18 Super Hornets shot down a Syrian jet that had dropped bombs near the U.S. partner forces SDF. Those forces, which are aligned with the U.S. in the campaign against the Islamic State group, warned Syrian government troops to stop their attacks or face retaliation.

The Russian Defense Ministry said in a statement that as of Monday, all coalition jets and drones flying west of the Euphrates River will be tracked as potential targets.

The Russians, who have been providing air cover for Assad’s forces since 2015, appear to want to avoid further U.S. targeting of Syrian warplanes or ground troops that have come under U.S. attack in eastern Syria recently.