Russian drones targeted apartment buildings and energy infrastructure in southern Ukraine’s Odesa overnight, injuring six people, including a toddler and two other children, officials said Wednesday.

Oleh Kiper, head of the regional military administration, said four apartment buildings were damaged in the attacks. Power company DTEK reported significant damage to two of its facilities and noted that 10 electricity substations in Odesa region had been damaged in December alone.

Russia has intensified long-range attacks on Ukrainian cities this year, increasingly targeting energy infrastructure to disrupt heat and water supplies during winter. From January to November, over 2,300 Ukrainian civilians were killed and more than 11,000 injured, a 26% rise compared to the same period in 2024, according to the United Nations.

Kiper described the Odesa strikes as “further evidence of the enemy’s terror tactics, which deliberately target civilian infrastructure.”

Moscow has claimed that Ukraine attempted to attack Russian President Vladimir Putin’s residence with 91 long-range drones late Sunday and early Monday, a claim denied by Ukrainian officials. Maj. Gen. Alexander Romanenkov of the Russian air force said the drones launched from Sumy and Chernihiv regions, but independent verification was not possible. The EU’s foreign policy chief Kaja Kallas dismissed the Russian allegations as a “deliberate distraction” from peace talks.

Meanwhile, Ukrainian President Volodymyr Zelenskyy said Romania and Croatia have joined a NATO-backed fund to buy U.S. weapons for Ukraine, bringing the total contributions to $4.3 billion since August.

Ukraine’s air force reported that 127 Russian drones were fired overnight, with 101 intercepted, while Russia said 86 Ukrainian drones were shot down over Russian territory, the Black Sea, and annexed Crimea. An oil refinery in Russia’s southern Krasnodar region caught fire from a Ukrainian drone strike but was quickly extinguished, local authorities said.