Helene Cooper and Carl Hulse contributed reporting from Washington.

By Helene Cooper.

Alissa J. Rubin reported from Kabul, Afghanistan, and Helene Cooper from Washington.

Helene Cooper contributed reporting.

This article is by Helene Cooper, Thom Shanker and Dexter Filkins.

Helene Cooper reported from Washington, and Carlotta Gall from Kabul, Afghanistan.

To the Editor: Thank you, Helene Cooper.

Helene Cooper, The House on Sugar Beach, (Simon and Schuster)

This article is by Sabrina Tavernise, Mark Landler and Helene Cooper.

Helene Cooper contributed reporting from Washington.