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Ukraine is ramping up its strikes deep inside Russia with the latest taking out a critical plant producing electronics for Russian missiles.

Getting into it: Ukraine’s General Staff said it fired air-launched cruise missiles at the facility in Voronezh, less than 125 miles from the border, calling it a “critical component” of Russia’s defense production and saying it makes electronics for missiles including the Iskander system. Voronezh Governor Alexander Gusev said the city had “sustained extremely heavy losses,” with five killed, dozens treated, and 10 apartment buildings and six homes damaged. Ukraine also reported striking the Dubna satellite communications center in the Moscow region.

The strikes were part of a heavy overnight barrage on Russia, with Moscow’s mayor saying 84 drones headed for the capital were downed and Russia’s Defense Ministry claiming 301 were intercepted across multiple regions. All four Moscow airports briefly halted flights, and in annexed Crimea, authorities canceled public events and even stopped summer camps from taking children, citing security.

Russia kept up its own deadly attacks on Ukraine. A drone strike in the Sumy region killed three members of one family, including a 13-year-old boy, his father and a 73-year-old grandmother, in what Zelenskyy called a hit on “an ordinary home, not a military target whatsoever.” More were killed in Zaporizhzhia and Odesa, and drones struck three foreign-flagged cargo ships, killing an Egyptian cook aboard a Turkish vessel.

This all comes as Ukraine has stepped up strikes within Russia in the last two months, with targets ranging from oil facilities that are generating revenue for its war machine to critical infrastructure. Zelenskyy has called such strikes “long-range sanctions,” meant to make everyday Russians feel the war and put the squeeze on Putin, with fuel shortages and rationing now reported in parts of Russia.

In response to the uptick in strikes, Russian Foreign Minister Sergei Lavrov said that Russia would “conduct massive group strikes on a regular basis against targets whose condition directly affects the combat readiness of the Ukrainian Armed Forces.”