Ukraine’s surprise robot offensive exposes a vulnerability in Putin’s war machine

A surprise Ukrainian robot offensive in the eastern Donbas region appears to have reversed over a year of Russian territorial gains, according to security experts, dealing a strategic blow to Russian President Vladimir Putin 's territorial ambitions. Details of the Ukrainian counteroffensive, dubbed "Operation Vivaldi," have started to come to light in recent weeks, offering rare insight into the fast-changing nature of frontline combat operations amid Russia's full-scale invasion .