Ukraine announces fourth phase of Operation Vivaldi, recaptures 176 sq km

President Zelensky announced the fourth phase of Operation Vivaldi, claiming recapture of 176 sq km and over 5,000 Russian losses, while halting Moscow's advance near Sloviansk-Kramatorsk. The claim is unverified and likely part of ongoing Ukrainian counteroffensive narrative. The use of terrestrial robotic systems signals a tactical shift to reduce troop exposure, which may have broader implications for future warfare.