As some Republican lawmakers push for the US to leave NATO, questions arise about the alliance's role, history, and impact on global security. Here's what to know.

Europe is staring down the barrel of a stark new reality where the United States being the backbone of NATO – the alliance that has guaranteed the continent’s security since 1949 for almost 80 years – is no longer a given.

Elon Musk expressed support for the U.S. exiting NATO, arguing it doesn't make sense for America to finance Europe's defense. His comments, made on social media, align with a suggestion from conservative commentators.

Vice President J.D. Vance and Defense Secretary Pete Hegseth fanned out to European capitals this month delivering what Hegseth characterized as a "stark" message to America's treaty allies: "Now is the time to invest [in defense], because you can't make an assumption that America's presence will last forever."

With President Trump’s clear mandate to pursue his “America first” agenda, we have the best opportunity in decades to sever our damaging and expensive

The president has discussed possibly favoring members of the alliance that spend a set percentage of their GDP on defense, sources told NBC News.

The ongoing dilemma surrounding Nato’s expanding portfolio of tasks has intensified under the Trump 2.0 administration which increasingly exposes an inner tension regarding the financial burdens associated with the alliance.

Donald Trump seems either unaware or unconcerned that Vladimir Putin’s plan is to weaken the United States too.

Local leaders and some foreign policy experts say it is a big win for Dayton and the state Ohio to host the NATO Parliamentary Assembly in late May. This is the first Parliamentary Assembly session to be held stateside in more than two decades and comes amid strained U.

President Donald Trump cast doubt Thursday on NATO’s commitment to defend the U.S. if attacked, despite the alliance’s historic invocation of

Russian glide bombs give its air force "teeth" and it should be a wake-up call for NATO, two military analysts wrote.