Trump, European leaders discussed 'Article 5' style guarantee for Ukraine outside NATO, sources say

U.S. President Donald Trump and European leaders discussed possible security guarantees for Ukraine outside NATO but similar to the Alliance's "Article 5" during their call on Saturday, two people familiar with the matter said.

One of the people, who requested anonymity to discuss sensitive matters, said that European leaders were seeking clarity on what kind of U.S. role this would involve, but that there were no details yet.

NATO regards any attack launched on one of its 32 members as an attack on all under its Article 5 clause.