Russian troops use pipelines to infiltrate Sumy

Russian forces are attempting to infiltrate Ukrainian positions on the Sumy axis by crawling through pipelines. A Ukrainian UAV commander, identified as Polishchuk, described the tactic, stating the infiltrators typically emerge and are killed within 10-15 minutes. The method highlights the intense, close-quarters combat occurring along the northeastern front. This report provides a grim, on-the-ground account of the attritional warfare in the region.