International Tensions Spark New Nuclear Threat

International Tensions Spark New Nuclear Threat

Credit: Michaela Stache/AFP

By Samuel King
BRUSSELS, Belgium, Mar 20 2026 – When German Chancellor Friedrich Merz opened the 62nd Munich Security Conference by declaring that the post-war rules-based order ‘no longer exists’, there was plenty of evidence to back his claim. Israel is committing genocide in Gaza in defiance of international law, Russia is four years into its illegal invasion of Ukraine, the last nuclear arms control treaty between Russia and the USA has just expired and the USA has withdrawn from 66 international bodies and commitments. Since the conference, Israel and the USA have launched another war on Iran, threatening to spark a broader regional conflict. Meanwhile the UN is undergoing a funding crisis, cutting staff and programmes, and civil society organisations that relied on US Agency for International Development funding are facing closure.

Inaugurated in 1963 as a transatlantic defence meeting, the Munich Security Conference has grown into the most significant annual global security meeting, with heads of state, foreign ministers, civil society, think tanks and the media taking part. The 2026 edition focused on the theme ‘Under Destruction’ and convened over 1,000 participants from more than 115 countries, including over 60 national leaders, alongside China’s Foreign Minister Wang Yi, US Secretary of State Marco Rubio and the directors of multiple UN agencies.

The conference’s Munich Security Report 2026 provided the analytical backdrop. It argued that the world has entered a period of ‘wrecking-ball politics’, with the post-1945 order being demolished by political forces that prefer disruption to reform. The report’s Munich Security Index showed the scale of the crisis. In France, Germany and the UK, absolute majorities of respondents said their government’s policies would leave future generations worse off. Across most BRICS and G7 countries, the USA is now rated as a growing risk.

In the build-up the conference, the world had been bracing for Rubio’s keynote address. Last year, US Vice President JD Vance’s aggressive speech accused European governments of suppressing free speech and aligning with political extremism, with no apparent acknowledgement of irony. Rubio took a more conciliatory tone, calling Europe America’s ‘cherished allies and oldest friends’. European Commission President Ursula von der Leyen said she was ‘very much reassured’. Half the hall rose to applaud.

The substance of the speech, however, followed every position Vance advanced the year before. Rubio defined the transatlantic relationship not around shared democratic institutions or international law, but around ‘Christian faith, culture, heritage, language, and ancestry’. This framing drew anger from global south delegates, who understood its explicit claim of global north cultural and racial superiority, excluding the majority of humanity.

The Trump administration was making a strategic calculation, having evidently concluded that Vance’s confrontational tone had backfired, bringing Europe closer to China and making it more reluctant to endorse US-led initiatives. So it switched to a softer messenger without changing the message.

Rubio’s post-conference itinerary made the USA’s current priorities clear. He flew directly from Munich to Budapest and Bratislava to meet two nationalist leaders, Hungarian Prime Minister Viktor Orbán and Slovak Prime Minister Robert Fico. Both are pro-Trump and friendly towards Vladimir Putin. These are the European politicians the Trump administration considers its true allies. Now the USA is planning to fund right-wing think tanks and charities across Europe in a blatant attempt to influence the continent’s politics.

Friedrich Merz’s diagnosis led to a historic and disturbing move: he and French President Emmanuel Macron announced they’d begun talks on extending France’s nuclear umbrella to cover other European countries. This is a development it would have been hard to imagine just a year ago. For decades European countries have based their security policies on NATO and its article 5, the collective defence commitment. But the Trump administration has threatened not to respect article 5, driving European states to embark on the long and expensive process of detaching themselves from relying on NATO. Now this evidently includes the exploration of nuclear alternatives.

Von der Leyen described the move as a ‘European awakening’ and called for a ‘mutual defence clause’ to be brought to life. UK Prime Minister Keir Starmer called for ‘hard power’ and readiness to fight if necessary. Poland’s nationalist President Karol Nawrocki said his country should get nuclear weapons. By responding in this way to the unravelling of the multilateral order, European states are further weakening the norms of non-proliferation and arms control that the post-war order sought to sustain. Responding to crisis with a second nuclear arms race could bring still further instability. Spain’s Prime Minister Pedro Sánchez was the only European leader at the conference to warn against this.

The conference’s conclusion was that those who care about the international order must build new institutions, coalitions and frameworks that are fit for purpose and accountable to the people they are supposed to serve. This reasonable framing sidesteps crucial questions: whose interests institutions will serve, and who’s excluded as the blueprints are drawn.

Instead of a new nuclear arms race, European states’ reaction to the fraying of their old alliances with the USA must be anchored in human rights, genuine multilateralism and a commitment to international law. This will only happen if civil society is present as a partner at the table.

It’s clear the old order is broken, and those committed to human rights and opposed to militarisation and naked power politics can’t afford to be bystanders. Their responses need to be more assertive and inclusive. A new international architecture that continues to exclude civil society and sideline the global south will simply reproduce the structures that have failed to address today’s crises.

Samuel King is a researcher with the Horizon Europe-funded research project ENSURED: Shaping Cooperation for a World in Transition at CIVICUS: World Alliance for Citizen Participation.

For interviews or more information, please contact [email protected]

 


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