Ukraine Advances 15 km Underground Into Russian Rear; Over 100 Losses, 30+ Captured in Operation Veles
The operation's naming—Veles, the Slavic god of the underworld—and its coordination across five Ukrainian units (Khartiia, R.U.H. assault regiment, Lava drone regiment, Achilles drone brigade, military intelligence) indicates this was a deliberate doctrine shift, not improvisation. Khartiia's commander explicitly stated the corps studied Russian pipeline tactics before executing their own, meaning the Kupiansk sector now has competing subsurface networks. If Russia loses control of the underground corridors it has relied on for months, its options narrow: seal the pipes (destroying civilian infrastructure and signaling to Ukraine where the routes are), fortify the tunnels (requiring combat engineers and air support Ukraine can target), or accept that deep penetration is now routine.
Khartiia has weaponized Russia's own infiltration playbook — the gas-pipeline crossings that allowed Russian forces to bypass Ukrainian defenses near Kupiansk since February are now a Ukrainian avenue of attack.
This reversal exposes a critical vulnerability in Russia's rear-area security: if Ukrainian sappers can train and execute a 15 km subterranean assault with multi-unit coordination, Russian commanders cannot assume any utility corridor is impassable or unmonitored. The operation signals that Ukraine has moved from reactive defense (holding Kupiansk) to proactive deep penetration, and the casualty count (100+ KIA, 30+ captured) in a single underground axis suggests either Russian forces were caught unprepared for subsurface combat or the tunnel network itself became a killing ground. Watch for whether Khartiia repeats this tactic on other axes where gas or water infrastructure crosses front lines—the Sudzha and Avdiivka corridors that Russian forces used in 2025 are now exposed templates.
Did the 100+ Russian casualties include units specifically tasked with rear-area defense, or were they forward-deployed forces caught in the surface-and-subsurface pincer?
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