That it has taken so long since the Russian intervention in Syria began in earnest, a year and a half ago, for an incident to occur that might directly pit Russian and American forces against each other has been nothing short of miraculous. That luck ran out this week, with the downing of a Syrian government warplane accused of carrying out air strikes against the U.S.-backed opposition Syrian Democratic Forces—the first time since the 1999 Kosovo campaign that an American fighter has shot down a plane in air-to-air combat.
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