US Military Leaders Signal Strategic Shift to Cislunar Warfare and Orbital Defense at Major Defense Conference

The United States military must radically expand its strategic horizons, preparing for armed conflict and tactical engagement across an unprecedented operational theater stretching from the deepest ocean trenches to the surface of the moon. Speaking at the Air & Space Forces Association’s Air, Space & Cyber Conference in National Harbor, Maryland, Chairman of the Joint Chiefs of Staff Gen. Dan Caine delivered a stark assessment of modern security paradigms, emphasizing that the armed forces can no longer rely on unhindered dominance in traditional domains.

The keynote address underscored an accelerating shift in Pentagon planning. As geopolitical competition expands beyond Earth’s atmosphere, military leaders are increasingly focused on cislunar space—the vast orbital highway extending from our planet’s lower boundaries out to the lunar orbit and the surface of the moon itself. This strategic pivot reflects mounting concerns among defense analysts that the lunar sphere and Earth-Moon orbital pathways will become critical geopolitical flashpoints over the coming decades.

A New Era of Contested Operations

Gen. Caine’s remarks highlighted a fundamental departure from post-Cold War military assumptions. For decades, the U.S. military enjoyed uncontested access to global commons, secure rear supply lines, and operational supremacy in the air, at sea, and on land. According to the chairman, those days are definitively over.

"Future conflicts will demand that we operate without the assumptions of uncontested access, secure rare areas, or uninterrupted or uncontested sustainment," Gen. Caine told conference attendees. "Our task, my friends, is to adapt right now, so the joint force is prepared to fight, endure, and win in global contested environments, from the seabed to cislunar space."

While the chairman did not explicitly name specific adversaries during his address, Pentagon planners have long viewed nations like China and Russia as primary drivers behind the militarization of space. Both countries have made substantial investments in counterspace technologies, ranging from direct-ascent anti-satellite missiles to maneuverable "inspector" satellites capable of tailing, monitoring, or potentially interfering with foreign spacecraft.

The Strategic Race for the Lunar South Pole

The pivot toward cislunar space is not merely conceptual; it is driven by physical geography and resource competition. Both the United States and China have established ambitious long-term plans to build permanent crewed and robotic bases near the moon’s south pole. This specific region has emerged as the most coveted real estate in the solar system due to the presence of vast reservoirs of water ice trapped within permanently shadowed craters.

Water ice is essential for sustained human exploration, as it can be consumed directly by astronauts and broken down into hydrogen and oxygen to produce rocket propellant and breathable air. Establishing a permanent footprint at the lunar south pole offers a vital logistical bridge for deeper space exploration. However, it also introduces terrestrial geopolitical rivalries into the lunar environment.

U.S. defense and civil space officials have repeatedly warned that whoever successfully establishes the first major infrastructure hub on the moon will effectively dictate the norms of behavior, navigation rights, and resource extraction protocols for the cislunar domain.

China has already demonstrated remarkable capabilities in lunar exploration that underscore its technological proficiency. In 2019, the Chang’e 4 mission successfully executed the world’s first-ever soft landing on the mysterious far side of the moon—a region permanently facing away from Earth, requiring a dedicated relay satellite to maintain communications. More recently, in 2024, the Chang’e 6 mission achieved another historic milestone by collecting and returning geological samples from the lunar far side to Earth.

Although the United States maintains its own ambitious roadmap through the NASA-led Artemis program—which aims to return astronauts to the lunar surface later this decade—military strategists are increasingly tasked with ensuring that these civilian and scientific endeavors remain protected from foreign interference.

Acknowledging Orbital Weapons and Deterrence

The ground-level realization of this space-centric defense strategy was further illuminated by Space Force leadership during the same conference. In a watershed admission on Tuesday, Sept. 15, Chief of Space Operations Gen. Douglas Schiess publicly confirmed what defense analysts had long suspected: the United States military actively operates weapons in Earth orbit.

"Let me be crystal clear: Today, guardians operate on-orbit weapons that can defend the joint force against space-enabled attacks," Gen. Schiess stated during his address.

The use of the term "guardians" refers to official personnel of the United States Space Force, the nation’s newest military branch established in December 2019. While Gen. Schiess provided limited operational details regarding the exact nature or location of these orbital assets, he strongly implied that the systems rely on electromagnetic capabilities rather than kinetic force.

Electromagnetic weapons—such as high-powered jammers, microwave emitters, and optical dazzlers—are designed to temporarily blind, disrupt, or disable an adversary’s satellite communications and intelligence-gathering capabilities without destroying the physical spacecraft. This approach is widely favored by military planners to prevent the catastrophic generation of long-lasting space debris. Kinetic strikes against satellites in low Earth orbit (LEO) produce thousands of high-speed shrapnel pieces that can threaten all operational spacecraft indiscriminately, regardless of nationality or ownership.

By openly acknowledging the deployment of orbital defensive systems, the Space Force is signaling a deliberate strategy of deterrence. The public disclosure marks a departure from previous decades of classified ambiguity, reflecting a growing belief that clear communication of defensive capabilities is necessary to deter potential adversaries from launching preemptive attacks on critical U.S. space infrastructure.

The Broader Implications for Global Security

The convergence of statements from Gen. Caine and Gen. Schiess paints a clear picture of how modern warfare is evolving. As commercial, scientific, and military activities push further away from Earth, the traditional boundaries of national security are expanding exponentially.

Satellites are no longer just passive tools for communication, weather tracking, and GPS navigation; they are recognized as vital strategic nodes in a global military network. Because modern military operations—from drone navigation to precision-guided munitions and secure troop communications—rely entirely on space-based assets, securing the space domain has become synonymous with national survival.

The implications of cislunar militarization and orbital weaponization will likely shape international diplomacy, arms control discussions, and defense budgets for decades to come. As the threshold between scientific exploration and geopolitical competition continues to blur, the United States military is signaling that it is fully prepared to project power, defend its assets, and secure victory across a vastly expanded operational theater that reaches all the way to the moon.