Opinion | 80 years since Hiroshima. How much longer can the world’s luck hold?

The article warns of a heightened global risk of nuclear proliferation, driven by factors including a perceived retreat of the U.S. nuclear umbrella, the demonstrated strategic utility of nuclear weapons by states like Russia, and the limited effectiveness of sanctions against determined nations such as Iran. It highlights the rapid nuclear build-up by an emerging autocratic bloc (Russia, China, North Korea, with Iran potentially joining), indicating increasing geopolitical instability and a growing challenge to the long-standing norm against nuclear weapon use.

Analysis

The current geopolitical landscape is characterized by a significant and escalating risk of nuclear proliferation, eroding the nearly 80-year norm against the use of such weapons. This threat is driven by several converging factors outlined in the analysis. A primary catalyst is the perception of a retreating U.S. security guarantee, fueled by isolationist political rhetoric, which may compel allies to develop their own nuclear deterrents. Concurrently, the strategic utility of nuclear arsenals has been starkly demonstrated by Russia's actions regarding Ukraine, which have successfully inhibited direct Western intervention. This is compounded by the rapid armament of what is described as a cohesive 'autocratic bloc' including Russia, China, and North Korea, with Iran potentially joining. The article highlights that China's nuclear force, for instance, doubled between 2020 and 2023. Historical precedents suggest that economic sanctions are largely ineffective at deterring determined states like North Korea or Iran from pursuing nuclear capabilities, implying that the probability of military conflict to prevent proliferation is rising. The failure of past U.S. administrations to halt these programs underscores the persistent and growing nature of this challenge, creating a highly unstable environment for global markets.

Key Decisions for Investors

• Investors should increase the geopolitical risk premium in valuation models, particularly for assets with high exposure to regions susceptible to conflict involving the U.S., China, Russia, or Iran.
• Consider increasing allocations to the aerospace and defense sectors, as heightened global tensions and the described nuclear arms race are likely to drive sustained growth in government defense spending.
• Closely monitor shifts in U.S. foreign policy, especially concerning its commitment to international alliances, as this is identified as a primary variable influencing global stability and the risk of proliferation.
• Evaluate portfolio exposure to sanctions risk, as countermeasures against proliferating states like Iran or North Korea could create significant and sudden disruptions in energy, shipping, and financial markets.