.Ukraine affirms F-16s have shown up in country as Zelensky proclaims 'brand-new section' in fight against Russia CNNUkraine acquires initial F-16 fighter planes to bolster defenses versus Russia, authorities tell AP The Associated PressExclusive|USA to Upper arm Ukraine's F-16 Planes With Advanced Defense The Exchange JournalWar in Ukraine: Zelenskiy Presents US-Made F-16 Fighter Planes in Trip Near Kyiv BloombergF-16 competitor jets get there in Ukraine that Zelenskyy states will enhance aggression against Russia CBS Information.