• High-Energy Laser Weapons: How They Work and What They Are Used For

    Laser weapons have been a staple of science fiction since long before lasers were even invented. More recently, they have also featured prominently in some conspiracy theories. Both types of fiction highlight the need to understand how laser weapons actually work and what they are used for.

  • Climate Change Poses Serious National Security Threat

    After years of debate, there is growing awareness within the Department of Defense and the U.S. government more broadly that climate change poses a serious national security threat. Some efforts to cope with this challenge are already underway.

  • A Careful Rethinking of the Iraq War

    A new book details military operations and political dynamics in Iraq, shedding new light on the challenges of state-building. “The United States wanted to build a new Iraqi state, but what we did was create a situation where multiple and large Shia militia make deals with each other,” says the author, Roger Petersen.

  • South Korea’s Demand for Critical Minerals

    Korea’s geostrategic situation feeds a sense of strategic and economic insecurity—it is close to an assertive China prepared to demonstrate displeasure by imposing costly economic coercion measures, while the ever-present threat from North Korea drives the south’s priorities for military resilience, including a hi-tech military industry.

  • Low-Level Blasts from Heavy Weapons Can Cause Traumatic Brain Injury − Two Engineers Explain the Physics of Invisible Cell Death

    When the force of a blast shoots a round out of a large-caliber rifle, howitzer or M1 Abrams tank gun, the teams of people operating these weapons are exposed to low-level blasts that can cause traumatic brain injuries. Low-level blasts do not cause visible trauma, yet, these blasts can cause physical changes in the brain that lead to a host of neuropsychiatric symptoms.

  • Charting the Future of Maritime Security

    The United States is a maritime nation surrounded by 95,000 miles of shoreline. Changes in economics, geopolitics, society, demography, or other factors, pose varied and evolving threats to the country’s maritime space – its waterways, ports of entry, and coastline borders.

  • Cybersecurity for Satellites Is a Growing challenge, as Threats to Space-Based Infrastructure Grow

    In today’s interconnected world, space technology forms the backbone of our global communication, navigation and security systems. As our dependency on these celestial guardians escalates, so too does their allure to adversaries who may seek to compromise their functionality through cyber means.

  • Iran's 'Axis of Resistance': Different Groups, Same Goals

    Iran’s so-called axis of resistance is a loose network of proxies, Tehran-backed militant groups, and an allied state actor. The network is a key element of Tehran’s strategy of deterrence against perceived threats from the United States, regional rivals, and primarily Israel.

  • If Russia Is Developing Some Kind of Space-Based Weapon, Putin May Never Get to Use It. Here’s Why.

    Although it’s unclear exactly what the feared Russian capability is, the country may be too crippled by the war in Ukraine to ever test such a weapon, says an expert who focuses on space diplomacy.

  • Cult of the Drone: At the 2-Year Mark, UAVs Have Changed the Face of War in Ukraine – but Not Outcomes

    Unmanned aerial vehicles, or drones, have been central to the war in Ukraine. Some analysts claim that drones have reshaped war, yielding not just tactical-level effects, but shaping operational and strategic outcomes as well. Mounting evidence, however, suggests that drones have delivered some tactical and operational successes for both Ukraine and Russia. Yet they are strategically ineffective.

  • Are Drones Revolutionizing Warfare? They Do Not, Skeptics Argue

    Drones have been employed by both sides to the Russia-Ukraine war on unprecedented scale. The prevalence of drones in Ukraine and other recent conflicts has led some observers to conclude that drones are revolutionizing warfare, while other analysts argue that drones are incremental improvements to existing technologies. These drone-skeptics contend that drones are not fundamentally shifting the character of war.

  • Trump-Biden Spat on NATO Highlights Divide on America’s Role in the World

    Former President Donald Trump doubled down on his threat that, if elected, he would not defend NATO members who don’t meet defense spending targets. Biden, who has made strengthening coalitions against adversaries the central tenet of his foreign policy, advocates for more international cooperation overall. “Trump is breaking Republican orthodoxy entirely, not only with his isolationism, but with his pandering to autocrats,” said Kristine Berzina of the German Marshall Fund research group.

  • Attributing Biological Weapons Use

    Why is attribution of BW use important? During a biological incident, including BW use, what evidence might provide valuable information to facilitate attribution? What is the state of the science for determining the origin of a biological incident, including BW use? What capabilities does DoD possess or could it develop to facilitate attribution of BW use?

  • Maritime Power Shapes the World Order – and Is Undergoing a Sea Change

    Western global leadership was the result of centuries of sea mastery. Controlling the global ocean enables the projection of military power all over the world, as well as securing the free flow of goods at sea. The prosperity and security of trading nations strongly depend on the stability of the global maritime supply chain and thus on freedom of navigation. But now Western maritime superiority is being challenged by other rising powers and by insurgent groups.

  • U.S. Raids in Iraq and Syria: How Retaliatory Airstrikes Affect Network of Iran-Backed Militias

    Iran’s “forward defense” strategy – focused on addressing threats externally before they become ones within its borders – would suggest that Iran will continue to support proxies through weaponry, funding and tactical knowledge to reduce the influence and legitimacy of the U.S. and its allies in the region. This underscores the delicate balance required in responding to Iranian-backed aggression – aiming to safeguard U.S. interests while preventing an escalation into a wider regional confrontation.