President Trump is turning frustration into leverage. After European allies refused to support military action against Iran and denied the U.S. access to key military bases, the administration is now openly questioning why America should bankroll NATO's defense at all.
The shift marks a potential turning point in Trump's approach to the alliance. What began as typical public volleys at European leaders last week has evolved into a structured campaign that could reshape the trans-Atlantic relationship. Defense Secretary Pete Hegseth announced a six-month audit to identify which NATO members aren't pulling their weight, with a warning attached: underperforming countries could lose U.S. military presence on their soil.
The grievance is specific. Trump and his team are frustrated that nations like Italy, Spain, France and Britain either blocked or limited American use of their military bases during operations related to Iran. That refusal, they argue, contradicts the entire premise of the alliance: mutual defense and burden-sharing.
"She wouldn't even let us use Italy's landing strips or runways, a great logistical inconvenience, and this despite the fact the U.S. contributes hundreds of Billions of Dollars a year to protect Italy, and other 'so-called' NATO Allies," Trump posted on Truth Social, referring to Italian Prime Minister Giorgia Meloni. Secretary of State Marco Rubio posed the question more bluntly: "If you have countries like Spain denying us the use of these bases, well, then, why are you in NATO?"
The personal slights have come fast. Trump claimed Meloni "begged" him for a photo at the G7, a claim Meloni flatly denied as "completely fabricated," touching off a social media brawl between the former allies. Trump also broke the news of British Prime Minister Keir Starmer's impending resignation before Starmer could announce it himself, a move described as "extreme" even by seasoned observers of Trump's behavior.
The contrast in Trump's rhetoric has been jarring. While he has mocked and insulted allied leaders, he has simultaneously lavished praise on authoritarian figures, calling China's Xi Jinping "a very smart man" and India's Narendra Modi "a great leader." He even suggested Russia's Vladimir Putin should not have been expelled from the G8.
The timing of NATO Secretary General Mark Rutte's visit to the White House on Wednesday could prove pivotal. Rutte has built a reputation for skillfully managing Trump's moods and expectations, but the calculus has shifted. The grievances are no longer rhetorical grievances. They are tied to concrete policy decisions: spending reviews, base access, and the potential reduction of U.S. military commitments in Europe.
Trump himself previewed his thinking in April, telling The Telegraph he was considering NATO withdrawal entirely if the alliance failed to support Iran operations. "I always knew it was a paper tiger, and Putin knows that too, by the way," he said.
The administration's message to allies is clear: NATO will operate on a transactional basis. Support American priorities, grant base access, and contribute meaningfully, or face consequences. Europe's reluctance to join operations against Iran has become the test case for what happens when a NATO member steps out of line.
Author James Rodriguez: "Trump has finally found leverage that sticks, and he's not shy about using it. This week's meeting with Rutte will tell us whether the alliance can adapt or whether it's about to face the most serious challenge of his second term."
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