They said the strike on the Moscow Oil Refinery damaged a facility responsible for about 40% of oil processing in the Moscow region. Videos published online suggest that one of the refinery's processing units was likely put out of operation. The unit is believed to account for roughly half of the plant's primary refining capacity.
According to Sergei Vakulenko, an expert at the Carnegie Eurasia Center, the damaged unit represents about half of the Kapotnya refinery's capacity and could affect 15% to 20% of Moscow's fuel consumption.
OSINT analyst Kyrylo Mykhailov said Moscow's air defense system appeared to have performed ineffectively during the attack, given the large number of air defense assets deployed around the city and the relatively small number of drones involved.
Mykhailov said the strike may have exposed vulnerabilities in the Russian capital's defense network. In his view, Russia relies heavily on Pantsir air defense systems, while the use of other counter-drone measures, such as mobile fire groups or interceptor drones, remains limited.
He also suggested that the shortcomings may be linked to difficulties detecting small, low-flying targets, as Russian radar systems are not always adapted to such tasks and an effective acoustic detection network likely does not exist.
According to the analyst, if similar attacks involving a limited number of drones continue to achieve their objectives, it could point to systemic problems within Moscow's air defense system.
Moscow came under a drone attack on the morning of June 16. A fire broke out at the city's largest oil refinery, located in the Kapotnya district. According to the Telegram channel Exilenova+, the facility is surrounded by dozens, if not hundreds, of air defense systems.
The Moscow Oil Refinery processes about 11 million metric tons of crude oil annually and supplies roughly 50% of Moscow's diesel fuel needs.