June 1, 2017 The Robert MacNeil Report : Season 42 Episode 109

Thursday on the NewsHour, President Trump breaks from nearly all nations in the world by abandoning the landmark Paris agreement aimed at combatting climate change. Also: The head of the UN refugee agency on the U.S. responsibility to help migrants, a new book that addresses the "new urban crisis," new developments in the Russia file and a Brief but Spectacular take on living with Alzheimer's.