Russia threatens to retaliate against U.S. military

Russia threatens to retaliate against U.S. military
The security officials said Russia complained Sunday in quiet talks with United Nations representatives that the Obama administration’s current aerial campaign against Islamic State fighters in Syria is a violation of international agreements regarding control of Syrian airspace. The officials said Russia warned it could potentially retaliate if U.S. or Arab airstrikes go beyond targeting Islamic State of Iraq and Syria, or ISIS, and instead bomb any Syrian regime targets.