From the Executive Summary: "The National Strategy for Countering WMD [weapons of mass destruction] Terrorism describes the United States Government's approach to countering non-state WMD threats, emphasizing the need for continuous pressure against WMD-capable terrorist groups, enhanced security for dangerous materials throughout the world, and increased burden sharing among our foreign partners. The United States will draw on the full range of our nation's and partner nations' capabilities to place WMD and associated materials and expertise beyond the reach of terrorists. We will also strengthen our defenses at home to ensure the peace and security to which every American is entitled. [...] The National Strategy for Countering WMD Terrorism is designed to achieve a set of strategic objectives whose common purpose is to greatly reduce the probability that extremist groups and individuals will conduct attacks using WMD."
United States. White House Office: https://www.whitehouse.gov/