The Associated Press cited a senior U.S. intelligence official as saying the blast was due to Russian missiles crossing into Poland. However, the Pentagon said on Tuesday it could not confirm reports that Russian missiles had crossed into Poland.
The EU will ban Russian crude imports from Dec. 5 and Russian oil products from Feb. 5, depriving Russia of oil revenues and forcing one of the world's top oil producers and exporters to seek alternative markets.
President Volodymyr Zelenskyy said the Russian attacks had struck on a "very wide" scale. He pledged that his military would improve on an already good record of downing missiles with help from its partners.