Given these doubts, European political leaders have expressed a determination to increase their defense budgets and upgrade their armed forces and defense industrial bases. For example, European Community leaders met in early March to discuss the urgency of rearmament and the possible shift in American commitment to the defense of Ukraine and/or Europe altogether. The president of the European Commission noted that Europe faces a “clear and present danger” from the possibility of an asymmetrical peace agreement favorable to Russia followed by a more ambiguous American commitment to the defense of Europe.

European concerns are understandable, but the possibility that free Europe can establish a self-sufficient deterrent against further Russian political coercion or military aggression, apart from US security guarantees, is remote. An effort to bisect American national security from that of Europe would be politically unwise, weaken deterrence, and open the door to piecemeal disintegration of the transatlantic partnership that served leaders during the Cold War and thereafter. Four aspects of this issue merit specific consideration.

First, NATO is the strategic and military embodiment of shared security commitment and risk among member-states. NATO’s totality of conventional and nuclear military strength, supported by its political unity, is the linchpin for credible deterrence against Russian revanchism. Collectively, NATO members have the resources, including conventional forces for modern combined arms battle and the defense industrial base for protracted conflict, to deter any repetition of Russia’s invasion against Ukraine or any Russian attack on the alliance. American commitment to European defense ensures that its strategic nuclear forces support deterrence across the entire spectrum of conflict, including possible Russian nuclear political coercion or first use.

Second, President Trump, on his best and worst days, tends to see international relations as entirely transactional. This may work when dealing with trade or tariff matters but not matters of war and peace. American entanglement with the security of Europe is not only transactional; it is also existential. European and American defense and deterrence requirements are joined at the hip, notwithstanding occasional spats and acrimony over the details of military planning and defense economic priorities. American politicians complain that the United States should try to avoid getting stuck in another “forever war” in Ukraine but Ukraine is not Iraq or Afghanistan.

A victory for Putin in Ukraine opens the door to European vulnerability that Russia will later exploit at a higher cost in blood and treasure for the United States and its European partners.

Therefore, it follows that the US decision in early March to suddenly suspend American military assistance and intelligence sharing with Ukraine was ill advised and poorly timed. Although holding back equipment deliveries might take some months to impact events at the front, failure to share timely intelligence could impact immediately on Ukraine’s ability to strike key Russian targets, including logistics hubs, command centers, and troop concentrations. Thus, the suspension sent the wrong message to Ukraine and to Russia about allied steadfastness as preliminary ceasefire and peace negotiations were taking place in Saudi Arabia.

Third, messaging of American commitment to peace and security in Europe also involves the decisions about modernization of the American nuclear deterrent and supporting infrastructure. This has a number of components. First, the US is replacing all three legs of its strategic nuclear triad. The Trump administration also wants to deploy the sea-launched cruise missile, to replace some existing nuclear warheads with upgrades, and to provide additional limited nuclear options for contingencies short of general nuclear war.

Fourth, American defense planning for each potential theater of war will continue to emphasize a spectrum of options including both conventional and nuclear weapons. The US must maintain credible deterrence against the combined forces of China and Russi, not only with respect to the possible outbreak of conventional war in Asia or Europe, but also with regard to the threat of nuclear first use or first strike against American allies or the American homeland.

In this respect, another challenge to deterrence lies in the increasing capability of conventional weapons for use against targets previously assigned to nuclear weapons, and, conversely, the attractiveness for some parties of low-yield nuclear weapons for use against targets previously assigned only to conventional weapons.

The challenges in meeting the preceding standards for deterrence in Europe and beyond are enormous. First, they include the evolving international security environment in which an emerging multipolar realignment places a coalition of China, Iran, North Korea, and Russia at cross-purposes with US and allied visions for world order in Europe and Asia. Second, the challenges involve the significance of emerging technologies for long-range precision strike, missile and air defenses, cyber deterrence and war, space conflict, and continuing developments in autonomous warfare. Third, the costs for maintaining deterrence in Asia and Europe are enormous and Europe cannot expect the United States to foot the bill.

Some American allies in Asia and Europe expressed a willingness to increase their defense budgets and their degrees of readiness for local or regional conflict. More demanding times are ahead. In short, there is no “Eurodeterrent” without the United States and vice versa.

Stephen Cimbala, PhD, is a distinguished professor at Penn State-Brandywine and a Senior Fellow at the National Institute for Deterrence Studies.

Euro-deterrence and the Quest for Peace in Ukraine was originally published on Global Security Review.

Such an alliance is needed most in the Indo-Pacific region where China is attempting, with some success, to challenge the American-led rules-based international order. Growing American alliances and partnerships beyond current bilateral relationships is the solution.

A more tailored and comprehensive approach involving Australia, Japan, and South Korea should serve as the beginning of an alliance that could expand and counter Chinese efforts in more than just the military realm. Such an alliance could bolster American nuclear deterrence and assurance in the region and directly support regional stability. A need for increased security cooperation in the Indo-Pacific is a clear and obtainable objective.

Formalizing a Multilateral Treaty Organization

Creating a regional multilateral treaty-bound organization with Australia, Japan, and South Korea will institutionalize defense cooperation and bolster collective security. This organization could formally facilitate regular interoperability consultations, increase joint coalition exercises, and more effectively coordinate responses to regional threats. By formalizing these relationships, the US and its allies can ensure a cohesive and effective deterrence strategy with more eloquence throughout the Indo-Pacific.

Establishing a new treaty organization will be challenging, but the cost-benefit will be worthwhile in the long term. This formality directly supports the diplomatic leg of the diplomatic, information, military, and economic (DIME) model.

Equipping Allies with Nuclear-Capable F-35s

Expanding the sale of nuclear-capable F-35As to Australia, Japan, and South Korea represents a significant advancement in regional coverage of the US nuclear umbrella. These next-generation fighters provide a capable and credible nuclear capability to prepare allies for future conflict, allows increased power projection against potential adversaries, and bolsters the operational compatibility between American forces and allies.

By integrating these aircraft into their respective air forces, allies can contribute to a more dynamic and responsive deterrence posture if a need arises as the geopolitical environment changes. And, if the alliance expands as expected, F-35s can compensate for their range limitations by “island hopping” their way to the fight or allies can build their own aerial refueling capability.

The presence of highly mobile nuclear-capable platforms increases regional solidarity in a strategically tailored way that messages adversaries that aggression will not be tolerated. Given growing Chinese aggression, this is an important task.

Developing Supporting Infrastructure

To maximize the efficacy of these new capabilities, it is crucial to establish a robust infrastructure that supports the deployment and maintenance of nuclear-capable assets for

forward-based power projection. This includes upgrading the host nations’ airfields, maintenance facilities, and command-and-control systems.

Such infrastructure will allow seamless integration of allied forces into joint operations and ensure sustained operational readiness. The host nations will need to take charge of the economic development required to maintain the increase in capability and its continued sustainment in the long term—relieving some of the costs that would otherwise be borne by the American taxpayer.

Increasing SSBN Port Calls and Coalition Heavy Bomber Task Force Exercises

Boosting the frequency of American ballistic missile submarine (SSBN) port calls and conducting more coalition heavy bomber task force exercises will further strengthen the deterrence posture within the region. American SSBN presence provides a method to showcase a strategic, survivable deterrent, while heavy bombers enable power projection. Conducting joint operations further solidifies a multinational force’s allied resolve and compatibility.

Additionally, the United States could showcase the ability to provide a safe haven for the required heavy bomber task forces if the need arises. These activities would demonstrate an increase in enhancing regional security ties and reassuring allies of the continuation of American commitment. The United States could also sell the B1 and B2 bombers it plans to retire to its allies.

Conclusion

Strengthening American nuclear deterrence in the Indo-Pacific requires a multifaceted approach that continues to foster positive alliances and partnerships that advance capabilities. Honoring these commitments showcases allied resolve to hold adversaries at risk with well-calculated multilateral decision-making processes and regional cooperation. By equipping Australia, Japan, and South Korea with nuclear-capable F-35As, establishing the necessary infrastructure, formalizing multilateral agreements, and increasing strategic exercises with ballistic missile submarines and heavy bombers, the US and its allies can enhance deterrence.

These measures will solidify regional defense cooperation, amplify the efficacy of the nuclear umbrella, and ensure a regional multilateral response to potential nuclear threats, thereby reinforcing the American commitment to maintaining stability and countering China’s growing influence across the region.

William Atkins spent a career in the nuclear enterprise. The views expressed are his own.

Bolstering Extended Deterrence was originally published on Global Security Review.