Wednesday on the NewsHour, as American anxiety rises over a looming trade war, we talk with President Trump's lead adviser behind the latest tariffs and get the view from China. Also: Martin Luther King Jr.'s legacy and whether solar energy can bring Puerto Rico out of the dark months after Hurricane Maria.

Friday on the NewsHour, the Trump administration announces new sanctions against Russia while simultaneously proposing new tariffs on Chinese imports. Also: Investigating the Trump business, inside the intricate bureaucracy of ISIS, Mark Shields and Reihan Salam on the week's news and Harry Belafonte remembers Martin Luther King Jr.