New Delhi, June 5 -- Ukrainian long-range drones struck an oil terminal in St. Petersburg and set it ablaze, Ukrainian President Volodymyr Zelenskyy said Wednesday, sending smoke billowing over the city where Russian President Vladimir Putin was born as it hosts Russia's leading event for attracting foreign capital.

The drones flew more than 1,000 kilometers (600 miles) to hit the terminal in Russia's second-largest city, Zelenskyy said on social media, a day after Moscow launched a major drone and missile attack on Kyiv and other Ukrainian cities.

Russian authorities said only that the Ukrainian drone strike targeted St. Petersburg's infrastructure, without providing details. The city's airport briefly suspended flights overnight becau...