Reflections on Nuclear Weapons and the Nature of War

It’s been eighty years since the U.S. dropped atomic bombs on Hiroshima and Nagasaki, marking the onset of the nuclear age. Many experts claimed these weapons would forever alter the face of warfare. But, in a way, they were mistaken.

Looking back two centuries, Karl von Clausewitz, a Prussian theorist, defined war as a fierce contest of will—a constant cycle of action and reaction, opportunity, and chaos. That perspective resonates across all time periods, from ancient Greece to our current reality.

Putin, for instance, has little to gain by openly threatening nuclear weapon use; realistically, he stands to lose a lot if he ever follows through with such threats.

The essence of war hasn’t changed, though its character is molded by technology, geography, and culture. Sure, nuclear weapons altered their character significantly and helped to mitigate direct clashes between the U.S. and the Soviet Union, yet they haven’t erased the fundamental rules of combat.

Global Conflict Dynamics

Since 1945, the existence of nuclear weapons has essentially set a ceiling on global conflicts. It’s interesting to compare the bloodshed from 1914 to 1945 against the more restrained violence that followed. The harrowing fear of annihilation imposed distinct boundaries.

During the Cold War, strategy centered around something called the “escalation ladder.” NATO recognized it couldn’t match the conventional military might of the Soviet Union in Europe, which is why U.S. planners issued threats about climbing these ladders.

• Tactical Nuclear Weapons: Used directly in battles against nearby enemy positions.
• Nuclear Weapons in the Theater: Regional strikes aimed at significant military targets.
• Strategic Nuclear Weapons: Long-range projects targeting the enemy’s main locales.

Initially, there was a belief in Washington that having an escalation advantage was significant. However, that perception faltered when Moscow developed powerful counter-strategies and theater-level nuclear capabilities in the 1970s. The American fallback strategy became less reliable.

In response, the U.S. modernized its arsenal—deploying Minuteman III, MX, and Trident missiles at a strategic level. There was also the creation of Pershing II missiles in Europe for theater-level strategy. This multi-layered approach did help restore some equilibrium.

The Cold War’s Aftermath

With the Soviet Union’s collapse, the nuclear focus in U.S. policy diminished. By 2010, a review under the Obama administration concluded that Russia was no longer viewed as an enemy. The nuclear strategy, it seemed, began to lose its urgency.

Trump attempted to shift this direction back, hoping to reignite deterrence against a resurgent Moscow. In contrast, Biden reverted to the Obama approach. While Trump emphasized preventing Iran from acquiring nuclear capabilities, his strategy regarding Russia appears volatile.

Nuclear Weapons Today

The ongoing conflict in Ukraine has reawakened fears of nuclear escalation. Both Moscow and Washington maintain significant reserves, with each side possessing around 1,400 deployed warheads. Modern technologies, thanks to satellite navigation, allow for exceedingly precise attacks. Moreover, low-yield nuclear options enable substantial destruction without necessitating massive detonations. Some worry that this could lead to nuclear arms being perceived as more usable.

So, could Putin leverage tactical nuclear options to break through the deadlock? Perhaps. Russia has low-yield warheads and delivery systems prepared, like the Iskander M. Yet, Moscow is also equipped with potent non-nuclear alternatives, such as large bunker busters or electromagnetic pulse warheads that can disable electronic systems across vast distances. These alternatives may create nuclear-like psychological impacts without crossing the nuclear threshold.

Thus far, NATO support for Ukraine mirrors historical patterns seen in past conflicts with China supporting the Soviet Union and North Vietnam. Meanwhile, Russia has ramped up its conventional strikes on Ukrainian infrastructure, deliberately raising the stakes in human and economic terms. This stark reality evokes the grim nature of nuclear fear: darkness, confusion, and despair.

With this context, it appears Putin lacks a solid military incentive to use genuine nuclear weapons; his conventional arsenal is achieving the objectives he seeks.

Navigating the Nuclear Landscape

Technological advancements have blurred the lines between nuclear and conventional weaponry, making it less likely that Russia will decisively cross into the nuclear realm. However, as Clausewitz indicated, war always introduces new uncertainties and opportunities. Nuclear weapons heighten these factors.

Putin can certainly bluff and intimidate, but, as one commentator put it, “He has nothing to lose from threatening to use nuclear weapons, yet he actually risks everything by employing them.”