The UK Ministry of Defense shared its report on Twitter.
The intelligence agency reminded that on March 9, Russia launched a wave of at least 80 long-range strikes on Ukraine's critical infrastructure.
Cruise missiles, surface-to-surface missiles, Iranian unmanned aerial vehicles, and, as experts noted, an unusually large number of air-launched hypersonic ballistic missiles were used in the attack.
According to analysts, this was the first major wave of long-range strikes since February 16, 2023, and likely one of the largest since December 2022. Ukrainian officials reported at least 11 civilian casualties.
"The interval between waves of strikes is probably growing because Russia now needs to stockpile a critical mass of newly produced missiles directly from industry before it can resource a strike big enough to credibly overwhelm Ukrainian air defences," the experts said.
Read more about the consequences of Russia's massive attack on March 9 and the situation in different regions of Ukraine here.