Japan Marks 70 Years Since Hiroshima Bomb

Tens of thousands of Japanese and people from 100 other countries gather in Hiroshima to mark 70 years since the world's first atomic bomb attack. We preview the Republican party debate, the first set piece on the long road to the White House. And, why Puerto Rico is in trouble.

(Photo: A japanese girl releases a commemoration message on a river. Credit: AFP/Getty Images)