Speed limitations imposed on the Starlink satellite internet service have significantly disrupted Ukraine's battlefield operations, according to an adviser to President Volodymyr Zelensky. Serhiy Beskrestnov stated that Ukrainian troops were not informed of the overnight speed cap of 100 mph (160 km/h) implemented by Elon Musk's SpaceX.

A source within the Ukrainian defense ministry confirmed these restrictions to the BBC, noting that the Starlink system is crucial for guiding drones to Russian targets and for air defense.

Beskrestnov revealed on Telegram that the speed limits had already caused the disruption of several missions, suggesting the action was not coincidental and was linked to the current political climate. He emphasized Starlink's effectiveness in enabling interceptors to counter Russia's advanced jet-propelled drones.

Defense ministry sources explained that terminals lose connection once a vehicle exceeds the 160 km/h threshold. This limitation complicates drone operations, particularly for interceptors and mid-range strike drones, while also degrading capabilities for front-line logistics, reconnaissance, and signal relaying.

These reported restrictions come amidst a significant escalation of Russian attacks. Overnight, Russia launched a barrage of missiles and drones, leaving at least 600,000 people without electricity, according to President Zelensky. Critical energy infrastructure in Kyiv, the surrounding region, and Kharkiv were targeted. Russia stated its strikes hit communications and energy facilities utilized by Ukraine's military.

In February, SpaceX's decision to deny Russian forces access to Starlink reportedly blunted Moscow's advance and caused confusion among its commanders. SpaceX has not publicly commented on the recent speed restrictions.

President Zelensky also mentioned that the U.S. had threatened to restrict intelligence sharing if Ukraine did not agree to a proposed energy ceasefire, a claim denied by U.S. President Donald Trump. The ongoing disruption to Starlink connectivity raises concerns about Ukraine's ability to maintain its operational tempo and defensive capabilities.