—Propaganda operations, which are used by terrorists to justify violent action as well as inspire individuals to support or join the movement. The ability of terrorists to exploit the Internet and 24/7 worldwide media coverage allows them to bolster their prominence as well as feed a steady diet of radical ideology, twisted images, and conspiracy theories to potential recruits in all corners of the globe. Besides a global reach, these technologies allow terrorists to propagate their message quickly, often before an effective counter to terrorist messages can be coordinated and distributed. These are force multipliers for our enemy.

Deny terrorists entry to the United States and disrupt their travel internationally. Denying our enemies the tools to travel internationally and across and within our borders significantly impedes their mobility and can inhibit their effectiveness. They rely on illicit networks to facilitate travel and often obtain false identification documents through theft or in-house forgery operations. We will continue to enhance the security of the American people through a layered system of protections along our borders, at our ports, on our roadways and railways, in our skies, and with our international partners. We will continue to develop and enhance security practices and technologies to reduce vulnerabilities in the dynamic transportation network, inhibit terrorists from crossing U.S. borders, and detect and prevent terrorist travel within the United States. Our efforts will include improving all aspects of aviation security; promoting secure travel and identity documents; disrupting travel facilitation networks; improving border security and visa screening; and building international capacity and improving international information exchange to secure travel and combat terrorist travel. Our National Strategy to Combat Terrorist Travel and our National Strategy for Maritime Security will help guide our efforts.

Defend potential targets of attack. Our enemies are opportunistic, exploiting vulnerabilities and seeking alternatives to those targets with increased security measures. The targeting trend since at least September 11 has been away from hardened sites, such as official government facilities with formidable security, and toward softer targets—schools, restaurants, places of worship, and nodes of public transportation—where innocent civilians gather and which are not always well secured. Specific targets vary, but they tend to be symbolic and often selected because they will produce mass casualties, economic damage, or both.

While it is impossible to protect completely all potential targets all the time, we can deter and disrupt attacks, as well as mitigate the effects of those that do occur, through strategic security improvements at sites both at home and overseas. Among our most important defensive efforts is the protection of critical infrastructures and key resources—sectors such as energy, food and agriculture, water, telecommunications, public health, transportation, the defense industrial base, government facilities, postal and shipping, the chemical industry, emergency services, monuments and icons, information technology, dams, commercial facilities, banking and finance, and nuclear reactors, materials, and waste. These are systems and assets so vital that their destruction or incapacitation would have a debilitating effect on the security of our Nation. We will also continue to protect various assets such as historical attractions or certain highprofile events whose destruction or attack would not necessarily debilitate our national security but could damage the morale and confidence of the American people. Beyond the Homeland, we will continue to protect and defend U.S. citizens, diplomatic missions, and military facilities overseas, as well as work with our partners to strengthen their ability to protect their populations and critical infrastructures.

Deny WMD to rogue states and terrorist allies who seek to use them. Weapons of mass destruction in the hands of terrorists is one of the gravest threats we face. We have taken aggressive efforts to deny terrorists access to WMD-related materials, equipment, and expertise, but we will enhance these activities through an integrated effort at all levels of government and with the private sector and our foreign partners to stay ahead of this dynamic and evolving threat. In July 2006, the United States and Russia launched the Global Initiative to Combat Nuclear Terrorism to establish an international framework to enhance cooperation, build capacity, and act to combat the global threat of nuclear terrorism. This initiative will help drive international focus and action to ensure the international community is doing everything possible to prevent nuclear weapons, materials, and knowledge from reaching the hands of terrorists.

With regard to our own efforts, our comprehensive approach for addressing WMD terrorism hinges on six objectives, and we will work across all objectives simultaneously to maximize our ability to eliminate the threat.

Determine terrorists' intentions, capabilities, and plans to develop or acquire WMD. We need to understand and assess the credibility of threat reporting and provide technical assessments of terrorists' WMD capabilities.

Deny terrorists access to the materials, expertise, and other enabling capabilities required to develop WMD. We have an aggressive, global approach to deny our enemies access to WMDrelated materials (with a particular focus on weapons-usable fissile materials), fabrication expertise, methods of transport, sources of funds, and other capabilities that facilitate the execution of a WMD attack. In addition to building upon existing initiatives to secure materials, we are developing innovative approaches that blend classic counterproliferation, nonproliferation, and counterterrorism efforts.

Deter terrorists from employing WMD. A new deterrence calculus combines the need to deter terrorists and supporters from contemplating a WMD attack and, failing that, to dissuade them from actually conducting an attack. Traditional threats may not work because terrorists show a wanton disregard for the lives of innocents and in some cases for their own lives. We require a range of deterrence strategies that are tailored to the situation and the adversary. We will make clear that terrorists and those who aid or sponsor a WMD attack would face the prospect of an overwhelming response to any use of such weapons. We will seek to dissuade attacks by improving our ability to mitigate the effects of a terrorist attack involving WMD—to limit or prevent large-scale casualties, economic disruption, or panic. Finally, we will ensure that our capacity to determine the source of any attack is well-known, and that our determination to respond overwhelmingly to any attack is never in doubt.