A Finnish fighter plane near a NATO flag in Constanta, Romania, June 2024
George Calin / Reuters As war rages in Ukraine and the U.S. presidential campaign heats up, NATO leaders are grappling with how to prepare the alliance for all possible outcomes. The German and Danish defense ministers have warned that Russia could attack NATO allies “within five years.” Conflict could come sooner if Russia achieves a breakthrough on the battlefield in Ukraine. And by the end of the year, former U.S. President Donald Trump, who has urged Russian leaders to “do whatever the hell they want” to NATO members who “don’t pay up,” referring to the alliance’s spending target, could be
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