Russia launched fresh attacks on Ukraine’s power grid overnight, wounding two energy workers and damaging key infrastructure as part of its campaign to weaken Ukraine’s energy sector ahead of winter.

Regional officials said facilities in Kyiv, Donetsk, Odesa, and Chernihiv were hit. “Russia continues its aerial terror against our cities and energy systems,” President Volodymyr Zelenskyy wrote on X, saying over 3,100 drones and 92 missiles were launched last week.

Zelenskyy urged tougher secondary sanctions on buyers of Russian oil and said he had a “productive” phone call with U.S. President Donald Trump to discuss air defense, energy, and long-range strike capabilities. In a Fox News interview, Zelenskyy said Ukraine was “working on” acquiring U.S. Tomahawk cruise missiles but added, “We will see.”

Trump recently said he has “sort of made a decision” on sending Tomahawks, while a senior Ukrainian delegation is due in Washington this week.

Moscow reacted sharply. Kremlin spokesman Dmitry Peskov said the Tomahawk issue is of “extreme concern,” warning of rising tensions. Belarusian President Alexander Lukashenko downplayed the likelihood of the U.S. supplying the missiles, calling Trump’s approach “tactical.”

Ukraine’s power infrastructure has been a constant target since Russia’s full-scale invasion began over three years ago. The latest strikes followed Friday’s barrage that injured at least 20 people in Kyiv and caused widespread blackouts — described by Prime Minister Yuliia Svyrydenko as one of the largest attacks on the energy grid.

Ukraine’s air force said it intercepted or jammed 103 of 118 Russian drones overnight, while Moscow claimed to have downed 32 Ukrainian drones over Russian territory.