(WASHINGTON TIMES) Russia has shut down a vital communication line with its U.S. counterparts in Syria, threatening to target any aircraft operating above Russian and Syrian regime-controlled territory in the country.

Moscow outlined the changes in Syria war policy via a terse statement by officials from the Russian Ministry of Defense released Monday, local news reports state. The moves were taken in response to Sunday’s shoot-down of a Syrian military aircraft by a U.S. fighter.

The shoot-down took place near the Syrian town of Ja’Din, located south of Tabqa dam, the coalition’s main logistics and air support hub for the ongoing assault to drive the terror group known as ISIS or ISIL from their self-styled capital of Raqqa, says a Pentagon statement.

Note: Read our discussion guidelines before commenting.