(FoxNews.com) - Russian officials on Monday threatened that their country would treat U.S.-led coalition planes in some parts of Syria as targets after the U.S. military shot down a Syrian Air Force jet on Sunday.
Russia's defense ministry said planes flying in Syria, west of the Euphrates River, would be considered targets.
The news came one day after the first time in history a U.S. jet shot down a Syrian plane – and the first time in nearly 20 years the U.S. has shot down any warplane in air-to-air combat.
The last time a U.S. jet had shot down another country’s aircraft came over Kosovo in 1999 when a U.S. Air Force F-15 Eagle shot down a Serbian MiG-29.
On Sunday, it was a U.S. F-18 Super Hornet that shot down a Syrian SU-22 after that jet dropped bombs near U.S. partner forces taking on ISIS.
Russia's defense ministry also said Monday it was suspending coordination with the U.S. in Syria over so-called "de-confliction zones" after the downing of the Syrian jet.
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