After World War II, both Japan and Germany became allies of the United States while the Soviet Union became a serious enemy. Most importantly, the Soviet Union established in Eastern Europe an alliance of nations under the Warsaw Pact. Thus, a decades-long Cold War began.

It was widely assumed that the collapse of the Soviet Union heralded an era of global cooperation and the end of great power competition and conflict. Arms control brought about the Intermediate Nuclear Forces Treaty (INF), Strategic Arms Reduction Treaty (START I and II) and the Conventional Forces in Europe Treaty (CFE) agreements.

Today, however, as many military and diplomatic experts conclude, the dangers facing the United States and its allies are more complex and more serious than perhaps at any time since the end of WWII. Now, more than ever, arms control remains elusive.

Nuclear conflicts are now among the most serious potential dangers, including proliferation of nuclear weapons, the pending end to formal strategic arms limits, and the actual use of theater nuclear force arising out of existing conventional conflicts.

To lessen such dangers, nuclear abolitionists proffer numerous arms control proposals. Six ideas are most common: (1) a policy of no first use of nuclear weapons; (2) adoption of a “minimum deterrent” nuclear strategy; (3) the elimination of intercontinental ballistic missiles (ICBMs); (4) a unilateral freeze of US nuclear force development; (5) an extension of New START nuclear arms limits; and (6) abandonment of any new theater nuclear forces such as the nuclear sea-launched cruise missile (SLCM-N) or the sea-launched cruise missile. All of these strategies harm American and allied security and make worse the strategic nuclear balance.

The US extended deterrent has, for 70 years, rested on the option of using nuclear force to stop massive conventional attacks on US forces and allies overseas. Depending on the regional military balance, such nuclear extended deterrent options were, and remain, viewed by our allies as central to keeping their nation safe from Soviet/Russian and Chinese aggression.

Minimum deterrence strategies assume the only retaliatory targets the US needs to hold at risk are adversary cities where a few hundred nuclear warheads are all that is needed to deter. This doctrine assumes Russia and China will be completely deterred by the fear of losing large numbers of their civilian population. But this ignores the fact that these regimes murdered millions of their own people to gain power—showing little value for human life. Even worse, a minimum deterrence strategy would also leave alive the leaders of such nations as well as their nuclear and conventional forces with which they will commit aggression.

Cutting out the land-based ICBM force and a third of the ballistic missile submarine force would unilaterally reduce the US strategic nuclear force to around 500 at-sea on-alert warheads. This would be only a third of the allowed New START treaty force and give an 8 to 1 to 18 to 1 Russian and Chinese advantage in nuclear weapons, respectively. This would ensure that both nations frequently use nuclear weapons for coercion and blackmail.

A freeze on American nuclear force development would be a deterrence disaster. The US has not yet fielded any portion of the modernized triad, which is not rusting into obsolescence. Russia has completed over 90 percent of its own modernization and China is well on its way to tripling the size of its nuclear force over the next decade. Neither would participate in a unilateral freeze. Again, the United States would face a far superior adversary.

An extension of New START sounds attractive but would be harmful to American interests. It would delay any needed uploading of American warheads. It would not affect or make transparent China’s breathtaking nuclear build-up. And without a sea change in Russian behavior, verifying current arms limits would still be impossible, given the past five years of treaty violations by Moscow.

The Congressional Strategic Posture Commission report of October 2023 emphasized the urgency of rebalancing the current gap in US regional nuclear forces. The SLCM-N and better theater air deterrence were key recommended upgrades, both of which would be eliminated by a number of these proposals. It is precisely this deterrence gap which Moscow has leveraged to limit US and allied assistance to Ukraine.

The restraint these arms control ideas wish upon the US military assumes that Russia and China will reciprocate. But in the multiple decades after the end of the Soviet Union, massive US restraint was eventually met with what Admiral Richard has described as a “breathtaking” Chinese build-up and a near matching Russian modernization. As former Secretary of Defense Harold Brown once warned, “We build, they build. We stop; they build.”

Now is the time to reject nuclear abolition for what it is, a purposeful effort to weaken the United States. American lives and freedom depend on it.

Peter Huessy is Senior Fellow at the National Institute for Deterrence Studies. Views expressed are his own. 

Making Nuclear Blackmail Great Again was originally published on Global Security Review.

Prior to Russia’s invasion of Ukraine, Germany was one of Russia’s closest economic partners. At the outset of the war, Germany was criticized for its hesitant offer to Ukraine of 5,000 military helmets, at a time when other European states, especially the Baltic nations, were offering weapons and heavy military equipment to defend against the Russian invasion.

This hesitancy had two facets. First, the belief that military aid would escalate the war to unmanageable levels. Second, the fear that Russia could easily achieve its military objectives. In such a case, it was unwise for Germany to risk its economic interests, particularly its heavy reliance on Russian natural gas.

However, Germany, later, began supplying weapons and other military aid to Ukraine under domestic and international pressures. Later, Germany even supplied heavy military equipment to Ukraine. As of August 2025, Germany is one of the largest suppliers of military aid, amounting to $47 billion worth. This includes air-defense systems, advanced drones, and heavy artillery. German action illustrates how incremental support erodes Russia’s nuclear red lines.

Incremental Steps Eroding the Threshold 

In the Russian conceptualization of deterrence, strategic deterrence (strategicheskoye sderzhivaniye), both nuclear and conventional deterrence merge into one holistically integrated framework. The threat of or actual use of nuclear weapons would deter a conventional attack on Russia, help achieve military objectives, prevent third parties from entering a war, and help de-escalate a war. In the 1990s, when Russia fielded a conventionally inferior armed force, it relied primarily on nuclear deterrence for its security.

However, a nuclear-deterrence-focused security strategy does not consider the erosion of thresholds owing to incremental changes during war (i.e., incremental changes test interwar and intrawar deterrence). After Pakistan became a nuclear power, Pakistan employed sub-threshold tactics (terrorism) against India, assuming that the fear of mutual nuclear vulnerability would prevent India from using kinetic means in retaliation. However, this approach failed when India employed conventional force against Pakistan in 2016, 2019, and, more prominently, in Operation Sindoor (2025). Similarly, Ukraine challenged Russia with its aggressive attacks in response to Russian invasion.

Russia’s updated nuclear doctrine (2024) brought the threshold of nuclear employment to an even lower level than earlier doctrine. This includes “actions by an adversary affecting elements of critically important state or military infrastructure” and “the massive launch […] of air and space attacks means (strategic and tactical aircraft, cruise missiles, unmanned, hypersonic and other aerial vehicles).”

Ukraine’s Operation Spyder Web crossed these “nuclear thresholds” set in the 2024 doctrine. Russia’s numerous threats of tactical nuclear weapons use are not taken seriously by Europe any longer. This creates a stability-instability paradox where “conventional balances also reduce the credibility of nuclear threats precisely because there is a conventional alternative to resorting to nuclear weapons.”

One of the implications of the stability-instability paradox in international relations is that while nuclear weapons create stability at the strategic level by deterring large-scale war between nuclear-armed states, they increase the likelihood of smaller, limited, or conventional conflicts. This is reinforced in the Ukraine conflict, where Russia simply cannot use nuclear weapons to deter third-party military help to Ukraine and Ukraine’s counteroffensives.

Nuclear deterrence has limitations and does not deter incremental or conventional actions of lower yields. The costs associated with utilizing nuclear weapons for deterring incremental erosion of thresholds is unimaginable. It is difficult for parties in a war to agree upon thresholds. Thus, resorting to conventional attacks rather than escalating to nuclear use becomes more likely, even after crossing stated red lines. 

States Should Build on That 

For that matter, those states looking to augment their defence preparedness should invest in conventional deterrence capabilities that can guarantee security. This goes beyond just building missile and air-defense systems of a high calibre. Conventional deterrence is not merely about weapons to deter an adversary.

Military thinking needs to go beyond just inventing new weapons and focus on military strategy. States need to go beyond a one-size-fits-all understanding of deterrence, where all states subscribe to the same benchmarks, variables, and conceptualization of deterrence, and have a shared sense of it. Situating deterrence within the fold of strategic culture, how a state’s strategic culture shapes deterrence, is more helpful. For instance, in contrast to the denial versus punishment typology, Russia uses the forceful versus non-forceful scheme for deterrence.

States may need to invest in the re-invention of military doctrines, strategy, and thinking to suit current challenges. It is worth studying how adversaries see the concept of deterrence. It confers two advantages. First, it helps one remain prepared for any incremental utilization of force under the fear of mutual destruction. Second, it allows the defender to assess the opponent’s risk-taking appetite and nuclear threshold in a war. This would confer advantages associated with effectively using conventional means.

At the same time, both parties need to be aware of over-extension, where a misguided action can cause a catastrophic nuclear exchange. Since agreeing on the same trigger point is subjective and difficult, states must study the pace, timing, and intensity of the use of non-nuclear forces to effectively achieve objectives without jumping to the nuclear step on an escalatory ladder.

In the end, preventing nuclear war is critical. Thus, understanding thresholds is important. If war is unlikely to end, ensuring it does not escalate to nuclear use should be a top priority.

Anshu Kumar is a Junior Research Fellow at the Centre for Russian & Central Asian Studies, Jawaharlal Nehru University, New Delhi.

The Russia-Ukraine Conflict Showcases the Limits of Nuclear Deterrence was originally published on Global Security Review.