By Yıldıran Acar, Political Scientist Türkiye’s acquisition of the Russian-made S-400 air defense system has long ceased to be a technical or even military issue. In Russian media and expert circles, it is now treated as a strategic resilience test—one that measures not only Ankara’s resilience under Western pressure, but also the credibility of Türkiye’s … Continue reading The S-400 Question: Ankara’s Bargain, Moscow’s Litmus Test