NATIONAL SECURITY STRATEGY Secure U.S. Borders and Territory Priority Actions ENHANCE MISSILE DEFENSE: State and non-state actors place the safety of the focused on North Korea and Iran to defend our American people and the Nation’s economic homeland against missile attacks. This system vitality at risk by exploiting vulnerabilities will include the ability to defeat missile threats across the land, air, maritime, space, and cyber- prior to launch. Enhanced missile defense is space domains. Adversaries constantly evolve not intended to undermine strategic stabil- their methods to threaten the United States and ity or disrupt longstanding strategic relation- our citizens. We must be agile and adaptable. ships with Russia or China. DETECT AND DISRUPT WEAPONS OF MASS DESTRUCTION: Defend Against Weapons of Mass Destruction (WMD) At our borders and within our territory, we will bolster efforts to detect nuclear, chemical, radiological, and biological agents and keep them from The danger from hostile state and non-state actors being used against us. We will also better inte- who are trying to acquire nuclear, chemical, radio- grate intelligence, law enforce- logical, and biological weapons is ment, and emergency manage- increasing. The Syrian regime’s use of chemical weapons against ment operations to ensure that its own citizens undermines Strengthening control internationa l norms against over our borders and these heinous weapons, which immigration system is may encourage more actors to pursue and use them. ISIS has The United States is deploying a layered missile defense system central to national security, used chemical weapons in Iraq economic prosperity, and and Syria. Terrorist groups con- the rule of law. frontline defenders have the right information and capabilities to respond to WMD threats from state and non-state actors. ENHANCE COUNTERPROLIFERATION MEASURES: Building on decades of i n it i at ive s , we w i l l au g - tinue to pursue WMD-related ment measures to secure, materials. We would face grave el i m i n at e , a n d pr event t he danger if terrorists obtained spread of W M D a nd related inadequately secured nuclear, materials, their delivery systems, technologies, and knowledge to reduce rad iologica l, or biologica l materia l. the chance that they might fall into the hands As missiles grow in numbers, types, and effec- of hostile actors. We will hold state and non- tiveness, to include those with greater ranges, state actors accountable for the use of WMD. they are the most likely means for states like We will direct coun- North Korea to use a nuclear weapon against TARG ET WM D TE R RORISTS: the United States. North Korea is also pursuing terterrorism operations against terrorist WMD chemical and biological weapons which could specialists, financiers, administrators, and facilita- also be delivered by missile. China and Russia tors. We will work with allies and partners to detect and disrupt plots. are developing advanced weapons and capabilities that could threaten our critical infrastructure and our command and control architecture. 8