Ukrainian aviation continues to operate over Russian-controlled settlements near Izyum. Ukrainian artillery struck Russian armor and positions approximately 65 km north of Izyum with support from Ukrainian drones. The Ukrainian General Staff reported that Russian forces suffered losses and retreated from an occupied settlement east of Izyum, likely due to a Ukrainian airstrike. Social media also observed Ukrainian fixed-wing aircraft striking the Russian salient in the Izyum area.
Russian forces made minor territorial advances toward Severodonetsk and are likely committing to a shallower encirclement of Ukrainian troops in Luhansk Oblast in place of the more ambitious encirclements that might have given them control over all or most of Donetsk and Luhansk oblasts. Luhansk Oblast Administration Head Serhiy Haidai reported that Russian forces engaged in battles in settlements approximately 4 km northeast and 5 km southwest of Severodonetsk on May 15. Haidai said that the Russian command likely scaled back its objective of reaching the Donetsk Oblast administrative borders to focus on Luhansk Oblast. Haidai said that the Russians are committing additional forces to their northern and southern drives toward Severodonetsk in Luhansk Oblast. He added that the Russian command also continued its efforts to seize the Lysychansk-Bahmut highway to surround Ukrainian units in Rubizhne, Severodonentsk, and Lysychansk, all in Luhansk Oblast. Commentary on pro-Russian Telegram channels and observed ground offensives northeast of Popasna suggest that Russian forces will try to advance to Lysychansk via the T1303 highway. Failed Russian attempts to cross Siverskyi Donets River from Kreminna likely further undermined Russian large-scale encirclement efforts.
Russian forces continue their efforts to reach Zaporizhia City and Slovyansk from Donetsk Oblast. The Ukrainian General Staff reported that Russian forces conducted an unsuccessful assault southwest of Donetsk City, likely to secure the N15 highway to Zaporizhia City. Russian forces conducted an unsuccessful attack on Avdiivka from the west. Pro-Russian Telegram channels claimed that units of the Donetsk People’s Republic advanced in the eastern Avdiivka area. Pro-Russian Telegram channels characterized Russian efforts in western Donetsk Oblast as “methodological and unhurried encirclement” of Ukrainian units in Donbas that will reunite with Russian forces in Izyum. Russian forces are unlikely to succeed in such large-scale encirclement operations due to the evidently limited availability of effective Russian combat power, stiff Ukrainian resistance, and Russian prioritization of the Severodonetsk offensive operation. Ukrainian forces destroyed the dam at the Mironovskyi reservoir, 5 km north of Svitlodarsk, on May 14 to cause flooding that will likely slow down Russian advances to the north.
Supporting Effort #2—Kharkiv City (Russian objective: Withdraw forces to the north and defend ground lines of communication (GLOCs) to Izyum)
The Ukrainian counteroffensive continued to push Russian forces from northeastern Kharkiv City toward the Russian state border on May 15. Kharkiv Oblast Administration Head Oleg Synegubov reported that Russian forces fired on Ukrainian positions northeast of Kharkiv, likely in an attempt to defend Russian ground lines of communications in Vovchansk, approximately 60 km from Kharkiv City. The Ukrainian General Staff noted that the Russian command had committed newly mobilized units from occupied Donetsk and Luhansk oblasts to the Kharkiv City axis—further evidence of the inadequacy of Russia’s available reserves.
- surprisingly, continue.
 https://t.me/stranaua/42255; https://www.youtube.com/watch?v=i6roO7zkkg4&ab_channel=Zinger; https://t.me/faceofwar/19522; https://twitter.com/666_mancer/status/1525718180819263490; https://twitter.com/The_Lookout_N/status/1525849952148152321