ISW Russian Offensive Campaign Assessment, June 15, 2026

Key Takeaways from the ISW:

• Russian forces conducted another devastating large-scale drone and missile strike series against Ukraine on the night of June 14 to 15, heavily targeting Kyiv, Dnipro, and Kharkiv cities.
• Russian forces continue to adapt their strike tactics to maximize damages.
• Russian strikes damaged significant cultural sites in Kyiv, Dnipro, and Kharkiv cities.
• The Russian information space is trying to deflect blame for the June 14 to 15 strikes by either blaming Ukraine for the damage or justifying the strikes as militarily necessary.
• Russia appears to be perpetuating sophisticated information operations that use artificial intelligence (AI)-generated footage of flag raisings to fabricate claims of Russian tactical successes in Kostyantynivka.
• Ukrainian officials continue to report that only about 100 to 150 Russian servicemembers have infiltrated into Kostyantynivka, however.
• Ukraine’s tactical situation in Kostyantynivka is deteriorating, but the Russian MoD is falsely framing the potential future seizure of Kostyantynivka as a harbinger of the immediate seizure of the entire Fortress Belt and the rest of Donetsk Oblast.
• Ukraine continues to express willingness for a leader-level meeting with Russia while the Kremlin demonstrates its continued pursuit of maximalist war aims and a total intransigence to negotiate.
• Russian forces recently advanced in northern Sumy Oblast.   

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