.Ukraine verifies F-16s have shown up in nation as Zelensky declares 'brand-new phase' in battle against Russia CNNUkraine receives first F-16 competitor jets to reinforce defenses versus Russia, authorities tell AP The Associated PressExclusive|United State to Upper arm Ukraine's F-16 Planes With Advanced Weapons The Stock Market JournalWar in Ukraine: Zelenskiy Shows US-Made F-16 Competitor Jets in Trip Near Kyiv BloombergF-16 boxer planes show up in Ukraine that Zelenskyy says will definitely boost aggression against Russia CBS Headlines.