War photographer Don McCullin revisits harrowing assignment: "I want my pictures to hurt you"

For more than 50 years, legendary war photographer Don McCullin has documented conflict on battlefields across the globe. Now, at 90, he revisits the assignment that shaped him as a reporter — and scarred him as a man. All images in the feature are (c) Don McCullin and featured in the book Vietnam published by GOST Books.