President Donald Trump arrives at the NATO summit in Ankara, Turkey, amid significant tension regarding recent U.S.-led military operations against Iran. U.S. Ambassador to NATO Matthew Whitaker expressed deep disappointment in allies that refused to provide military bases or overflight rights during "Operation Epic Fury," specifically citing Spain's refusal and the United Kingdom's initial hesitation. This friction underscores a broader push for "NATO 3.0," where allies must increase defense spending to avoid over-reliance on the United States. While the formal agenda covers Ukraine and Russia, Trump intends to press members to meet a new 5% GDP defense spending benchmark. The administration is even considering countermeasures for non-compliant nations, suggesting that future benefits may be tied to a country's level of contribution and support during international conflicts.