NATO summit addresses defense spending as Trump pushes European allies for 5% GDP commitment, while Iran nuclear concerns and Ukraine's membership aspirations complicate alliance unity.

NATO’s summit in the Netherlands on Wednesday has been described as “transformational” and “historic.” “We’re witnessing the birth of a new NATO ,” Finland’s President Alexander Stubb said. The 32 members of the world’s biggest security organization endorsed a plan to massively ramp up defense spending,