NATO Secretary-General Mark Rutte on Monday warned that Russian President Vladimir Putin could threaten the alliance within five years, calling for a massive increase in defense spending and military capabilities across member nations, Politico reported.

Speaking at Chatham House in London, Rutte said the military alliance must prepare for a future where “danger will not disappear even when the war in Ukraine ends.”

“Let’s not kid ourselves; we’re all on the eastern flank now,” Rutte said, citing the extensive range of Russian missile systems.

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