Russia – Ukraine
Ukraine’s most significant operational development this week was the formal launch of Operation Vivaldi, a counteroffensive against the Russian salient northwest of Lyman that combines local ground manoeuvre with strikes against Russian logistics, fuel and electronic-warfare enablers. Ukraine’s 3rd Army Corps reported clearing or liberating approximately 85 km², including the recapture of Serednie and the removal of Russian infiltration elements from nearby areas; these claims remain only partly independently verifiable.
The operation’s principal significance is its disruption of Russia’s intended approach toward the Slovyansk–Kramatorsk defensive belt, forcing Russian forces to defend the salient and reducing pressure on Ukraine’s northern Donetsk flank.reutersisw
The Army must train combined-arms task forces to identify and aggressively exploit exposed adversary salients before they can consolidate into fixed operational staging areas. This demonstrates that executing mechanised counter-punches coupled with infantry/unmanned infiltration clearing can reset a critical sector’s operational geometry, forcing a larger adversary onto the tactical defensive and preserving the integrity of primary defensive belts.