As Ukrainian drone strikes continue targeting critical infrastructure deep within Russia and disrupting access routes to Crimea, mounting challenges have prompted discussions within Moscow about the possible use of tactical nuclear weapons. While Russian President Vladimir Putin has acknowledged battlefield difficulties, some ultra-nationalist figures advocate deploying Russia’s smaller-scale nuclear arsenal to undermine Ukraine’s resistance and intimidate Western nations.

Unlike Russia’s strategic nuclear warheads—over 1,700 in number and capable of wide-scale destruction—this approach would involve tactical or non-strategic nuclear weapons, estimated to number up to 2,000. These weapons, which range from missile warheads to artillery shells, have explosive yields from 0.5 kilotons to 50 kilotons, with the higher yields exceeding twice the power of the atomic bomb dropped on Nagasaki in 1945.

Throughout the conflict, Putin has periodically suggested that nuclear weapons could be employed if certain undefined “red lines” were crossed by Ukraine or its Western supporters. While initially seen as bluster, these threats influenced U.S. policy, with President Joe Biden expressing concerns that Putin might mean what he said. This caution affected the nature and extent of military aid provided to Kyiv. Some officials remain apprehensive that Putin, having previously used nuclear rhetoric as leverage, could escalate from threat to action, although most analysts consider an actual strike unlikely.

If Russia were to deploy nuclear weapons, it would probably not target Ukrainian cities, government centers, or military headquarters directly. More plausible scenarios involve a “demonstration strike” using a low-yield device detonated over an unpopulated area, such as the upper atmosphere or the Black Sea. Such an action would likely aim to display resolve and exert political pressure on Kyiv and Western backers.

However, executing even a limited nuclear operation would present significant logistical and technical hurdles. Russia’s tactical warheads are dispersed among 12 arsenals and have essentially been dormant since the late Soviet period, with no recorded use in exercises since 1990. Reactivating them would require specialists with experience that has lapsed over decades. The complex process of moving warheads, managed by the military’s 12th Main Directorate, would be difficult to conceal from Western intelligence satellites and signals monitoring, potentially alerting global powers to an impending escalation.

International reaction would likely be swift and negative. China and India, two key nations maintaining close relations with Russia, have expressed strong opposition to any nuclear weapon use, concerned about preserving the post-World War II taboo against such actions. Chinese President Xi Jinping publicly discouraged nuclear threats in 2023, and Indian Prime Minister Narendra Modi conveyed his disapproval quietly. Putin would likely seek to secure their support or at least acquiescence before proceeding, given Russia’s growing reliance on these partnerships.

Domestically, broad Russian public opinion and military leadership appear largely averse to any nuclear escalation, aware that it could provoke a decisive NATO response. Some hawkish individuals may endorse the use of tactical nukes, but the majority of Russians could view nuclear strikes as excessively risky. Western officials and analysts have warned that nuclear use by Russia would trigger a forceful countermeasure, potentially involving comprehensive efforts to neutralize Russian conventional forces in Ukraine, Crimea, and the Black Sea region. There has also been speculation about targeting Putin personally should he choose to escalate dramatically.

Despite speculation and occasional provocations, no clear signs indicate that Putin is preparing to cross this critical threshold. His preference for symbolic military actions suggests that a nuclear strike would be a drastic and unprecedented step, one that would carry significant geopolitical risks and uncertainties. For now, the prospect of nuclear use remains a guarded and highly improbable option amid the ongoing conflict.