Zelensky's men 'caught off guard' as Russia batters Ukraine with 'most-advanced' S-400 | Report

The West's promise of air defense systems for Ukraine may not yield much for its forces as the Russians are reportedly using the superior S-400 surface to air missile systems. According to The Kyiv Independent, the Russians used its most-advanced and sophisticated missile system to strike Kyiv on December 31, last year. The Ukrainians were reportedly 'caught off guard' by Russia's use of its most sophisticated missiles.