Russian forces ‌killed six people early on Tuesday in an attack on the southeastern Ukrainian city of Zaporizhzhia that involved North Korean ballistic missiles, Ukrainian President Volodymyr Zelenskyy said. "The city was hit by North Korean ballistic missiles, Zircons (anti-ship missiles) and KABs (precision-guided aerial bombs)," Zelenskyy wrote on Telegram. Russia did not immediately say ​whether it had used North Korean missiles in the attack on Zaporizhzhia. Kyiv has increasingly been striking Russia, including hitting oil refineries and warehouses used by e-commerce retailer Wildberries. Russia has also used the pioneering low-cost, long-range Iran-designed Shahed attack drones, unleashing thousands of them on Ukraine every month.