country. and yet a suddenly because of an act of congress that few people noticed, montenegro has profound significance to every american. since last year, montenegro has been a member of the nato alliance. that means if it ever findsn itself in a war, our military is pledged to defend it. that's called a defense guarantee. defense guarantees don't seem like a big deal until suddenlyly they are, that's when the first world war started. 37 million casualties later the world began to rethink the wisdom of treaties like that but thet lesson seems to have been lost since. in our interview with president trump in finland we thought it might be worth having a conversation or starting one about american's obligations to nato. we ask the simple question, why is it in our interest to defend the territorial integrity of montenegro? why should our soldiers fight andol die on its behalf? here's the exchange were had. so membership in nato obligates members to defend any other member from attack.