PBS News Hour S42 E166 August 21, 2017

Monday on the NewsHour, the sun goes dark for a moment, leaving millions marveling at a sight not seen in almost a century. Also: President Trump is set to unveil a strategy in Afghanistan, the Navy wants answers on another warship accident, drought threatens to turn off the Eternal City's fountains, novelist Tom Perrotta captures the humor and drama of middle age.