NATO's Burden-Sharing Reckoning: From 2% Promise to 5% Reality
For decades, the North Atlantic Treaty Organization has operated under an implicit arrangement: the United States provides the lion's share of defense capabilities while European allies enjoy security guarantees at bargain prices. NATO's evolution from a 2% GDP defense spending guideline to a staged 5% ambition by 2035 represents a fundamental reckoning with the alliance's sustainability and fairness.