The longstanding Western alliance is far more likely to evolve and accommodate US demands for a strengthened Europe.

The operation, Steadfast Dart, comes as President Trump has been accused of undermining the alliance and will be watched closely to see how well the allies manage without their most important partner.

NATO Secretary General Mark Rutte drew stinging rebukes from across the continent over remarks alleging Europe can't defend itself without the aid of the US. While Europeans say the assessment is unjustified,

German Chancellor Friedrich Merz says the European Union can be an “alternative to imperialism and autocracy” and can forge deals with like-minded partners in a world of increasing great power rivalry.

Marco Rubio tells NATO allies the U.S. "may be the richest country in the world, but we don't have unlimited resources," discussing defense needs.