The 32 leaders also said they were reaffirming their "ironclad commitment to collective defence".

Von 2035 an soll jedes Mitgliedsland jährlich fünf Prozent des Bruttoinlandsprodukts in die Verteidigung investieren. Eine riesige Herausforderung.

Talks in the Netherlands will focus on a pledge to increase defence spending to 5pc of GDP