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Concerns over Russia's 'hybrid threat' to Europe intensified after Luxembourg's only international airport halted flights for hours due to unauthorized drones, and nearly 340 drone-related incidents were recorded near UK Ministry of Defence sites over the past year. French President Emmanuel Macron ordered his government to prepare critical infrastructure against drone and cyberattacks, while Latvia's president warned Europe would struggle to repel a Russian missile attack given gaps in air and missile defense. Trump separately said Russia has been attacking Ukraine's European allies for years, as Poland raised concerns about a possible Russian attack. NATO's top general said the alliance is ready for a possible Russian escalation, citing detailed defense plans for its eastern flank.