The film tells the story of five journalists who fought to reveal the truth about the Vietnam War. They all went on to win Pulitzer Prizes.
And Moses Kiptanui, a three-time world champion from Kenya, said earlier this month that doping is taking place in the country’s famous running camps.
So how widespread is the problem and what is the sport doing about it?
Experts share a range of perspectives on how to combat the Islamic State militant group, and the role the U.S. should play.