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Drone Strike Cripples Russian Refinery: Three Out of Four Processing Units Destroyed

Атака безпілотника знищила основні установки на російському нафтопереробному заводі.

Attack on Kirishinefteorgsintez

A drone strike on May 5, 2026, forced the Russian oil refinery Kirishinefteorgsintez to halt crude oil processing. The attack destroyed three of its four primary distillation units and also damaged several secondary processing systems. A fire broke out at the facility, causing extensive equipment damage.

The refinery has an annual capacity of approximately 20 million tons of crude oil, though in recent years it has processed around 18 million tons per year. This accounts for roughly 7% of Russia's total oil refining capacity. Industry sources say it is currently impossible to estimate when operations might resume, as the full extent of the damage requires further assessment.

Explosions in Cheboksary

On the same night, explosions were reported in the Russian city of Cheboksary, prompting authorities to declare a missile threat. The target was the AO VNIIR-PROGRESS plant, which manufactures the Kometa jam-resistant navigation modules. These systems are used in Russian drones, as well as cruise and ballistic missiles. Details about the consequences of this attack are still being clarified.

The strikes on Kirishinefteorgsintez and the Cheboksary plant could have serious repercussions for Russia's oil refining sector and its defense industry.

The loss of a significant portion of the refinery's capacity may lead to a reduction in national oil output, which in turn would affect the economy. These incidents highlight the growing risks to critical infrastructure amid ongoing geopolitical tensions. A thorough assessment of the damage and recovery timelines for the affected facilities remains a priority.

The recent drone strike on Kirishinefteorgsintez is not an isolated incident; it follows a series of targeted attacks on vital Russian oil facilities. For a comprehensive overview of these incidents, including the significant strikes on the Tuapse refinery, you can explore the detailed timeline of events that have escalated tensions in the region. This context is crucial for understanding the broader implications of these attacks on Russia's energy sector and military capabilities. Check out the full account of these developments here.