突发！乌称俄一化工厂遭袭，系俄军火供应关键环节；泽连斯基与特朗普讨论更换乌驻美大使人选

Group 1 - Ukraine claims that a chemical plant in Krasnozavodsk, Moscow region, which produces explosives and ammunition components, was attacked, marking a critical point in Russia's military supply chain [2] - Russian defense ministry reported intercepting and destroying 91 Ukrainian drones over multiple regions, including Belgorod and Kursk, while Ukraine confirmed the downing of 75 drones during the same period [3] - Russian aviation authority reported the cancellation of 485 flights and delays for 1,900 flights due to drone interference from July 5 to July 7, although normal operations have since resumed [4] Group 2 - Ukrainian President Zelensky discussed the potential replacement of the Ukrainian ambassador to the U.S. with President Trump, considering candidates such as the current Prime Minister and other high-ranking officials [5]