Ukrainian forces launched a cruise missile attack deep inside Russia, striking a key military production site overnight, President Volodymyr Zelensky announced.

He stated that FP-5 Flamingo cruise missiles targeted the drone and missile factory in Cheboksary within the Chuvash Republic, situated more than 900 km from the front line. Regional authorities reported three people wounded during the strike on the city.

Ukraine further reported strikes on the Moscow-held port of Mariupol on the Sea of Azov, a Russian oil refinery in Samara and a shadow fleet oil tanker operating in the Black Sea.

Over recent months Kyiv has stepped up drone operations against important infrastructure across Russia.

Officials in Kyiv describe energy facilities as valid targets because they support Moscow war efforts, although long-range missile strikes inside Russia remain uncommon.

Russian forces stated that air defenses destroyed 326 Ukrainian drones across several regions during the night.

Ukraine air force reported intercepting 181 of 207 drones launched by Russia in the same period while acknowledging 21 direct impacts at 14 sites.

Local officials noted at least two fatalities and 26 injuries, including two children, across four Ukrainian regions in the past day.

In a Telegram message President Zelensky wrote that Ukrainian FP-5 Flamingo missiles struck a military plant in Cheboksary supplying components for drones and missiles to the invading army.

He also released video reportedly showing a missile in flight and smoke rising from the target area.

Ukraine military later confirmed the VNIIR-Progress plant was hit and that a fire broke out at the location.

Chuvash Republic leader Oleg Nikolaev verified the attack on Cheboksary and reported three injuries without confirming damage to the military site.

The FP-5 Flamingo carries a 1,150 kg warhead and is said to have a 3,000 km range, placing Moscow and other major cities inside its reach.

Ukraine and its Western partners continue developing additional missile systems to raise the cost of the invasion and push Moscow toward talks.

Russian President Vladimir Putin has dismissed all negotiation offers so far.

The Kremlin leader claimed Russian forces are advancing along the entire front, yet the line has stayed largely unchanged for several months.