NATO and Transatlantic Security

Dutch Prime Minister Mark Rutte told the European Parliament’s Security and Defence Committee that Europe “can’t” defend itself without U.S. support, warning that going it alone would require roughly 10% of GDP — including the cost of an independent nuclear deterrent — and that the U.S. nuclear umbrella remains the “ultimate guarantor” of European security. He cited tensions with President Trump over Greenland and tariff brinkmanship as evidence of strains inside NATO, stressed that Europe and the U.S. “need each other,” and echoed concerns about growing Arctic security challenges while Greenland’s leader signalled a preference for Denmark and NATO.