Turkey sends rocket launchers and anti-aircraft guns to its border with Syria following the downing of a Turkish military plane last week.
Turkey threatens to "strangle" the United States-backed Syrian Border Security Force "before it's even born", while Syria vows to crush it and expel American military personnel from the country. Russia called the plans "a plot to dismember Syria".
ISIS claims responsibility for the deaths of two Syrian refugee activists who fled to Sanliurfa, Turkey, raising concerns about the group’s reach in countries outside of Syria and Iraq. Ibrahim Abdel Qader, a founder of Raqqa Is Being Slaughtered Silently, and Fares Hammadi are said to have been killed by an acquaintance posing as a defector from ISIS.