President Volodymyr Zelenskiy said Ukraine had used a long-range missile supplied by the United States for the first time. His comments followed reports that a weapon known as ATACMS destroyed nine helicopters at a Russian base in the country's east. Ukraine has not confirmed that the missile was used. Ukraine said targets attacked in Berdyansk and Luhansk included air defense systems and other equipment. Dozens of Russian soldiers were killed or wounded in the operation, he added. "ATACMS worked very accurately. ATACMS has proven itself," Zelenskiy said in an evening address posted on social media, without going into details about when or where it was used.