Kyiv is bolting two Soviet-era missile systems together to knock down Russia's fastest Geran-4 and Geran-5 drones. Ukraine's 156th Maksym Kryvonis Anti-Aircraft Missile Regiment has downed about 20 air targets using a Kub launcher firing under the radar and fire control of a Buk unit.

Russia has switched to jet-powered Gerans, faster drones that Ukraine's cheap interceptors struggle to catch, so more of them reach their targets. The damage from Russian strikes is set to reach up to $10 billion this year, according to Ukraine's Economy Ministry.

Meanwhile, Western resupply has thinned too. Deliveries of air defense missiles from partners fell threefold in the first half of 2026 against 2025, even though those partners hold the missiles, President Volodymyr Zelenskyy says.

So crews stretch what they have. In the Kub-Buk hybrid, a Kub launcher cannot aim on its own, lacking a radar to light up a target for its missile, according to Militarnyi. A Buk has that radar, so the two fire together, the Kub sending its 3M9 missile where the Buk points. The pairing is possible because both come from the same Soviet design line.

Western missiles in Soviet launchers

The same regiment reaches for a second workaround as Buk missiles run short. Its crews have rewired launchers to fire American RIM-7 interceptors, a Soviet-Western mongrel that troops nicknamed Frankenstein and the US calls FrankenSAM.

The patchwork earns its keep. One crew commander said some of these machines have more than 34 air kills each, and a single launcher has sent up RIM-7s 131 times, Ukrainian troops said.

A layered answer

The hybrids are one thread in a wider web. Ukraine is stitching together a layered defense against the jet-powered Gerans, leaning on electronic jamming, fighter jets, and a new class of homegrown interceptor drones. Each tool has limits, and the newest interceptors still bring down only the occasional jet drone.

The bet now is on numbers. Ukraine aims to build up to 400 interceptor drones a month by the end of October to chase the faster Gerans, Zelenskyy said on 2 October. Until that scale arrives, improvised launchers like the 156th Regiment keep filling the gap.