- One of two pilots is killed; also killed is a Russian marine during a rescue operation, Russian news agency says
- Russian plane was warned numerous times, Turkey's President says
- ISIS isn't present on border area, but "our brothers and sisters -- Turkmen" were there, he adds
Istanbul (CNN)One of the world's most volatile regions was roiled further Tuesday when Turkey shot down a Russian warplane near the Turkish-Syrian border. Turkey said it hit the plane after it violated Turkey's airspace and ignored 10 warnings.