Now that NATO leaders have returned home from this week's summit, the question is what, if anything, was accomplished? Is the alliance more united, or have its underlying divisions simply been pushed to another day? For answers we turn to former US Ambassador to NATO Julianne Smith. Also on today's show: , former UK Prime Minister Theresa May; singer/songwriter Angelique Kidjo  Learn more about your ad choices. Visit podcastchoices.com/adchoices