Peter Mandelson, the British ambassador to the United States, delivered a speech at the Atlantic Council’s Christopher J. Makins Lecture on May 27, 2025. His address, titled “Renewing the Transatlantic Alliance: Peace Through Strength in a New Age of Great Power Rivalry,” focused on the evolving nature of international alliances amid current geopolitical challenges.
Mandelson reflected on historical events such as the fall of fascism in Europe and the Cold War era, highlighting Britain’s role alongside America in forming NATO and maintaining global peace. He noted that “Western unity which ultimately ended the Cold War peacefully” has been a cornerstone of past successes.
The ambassador discussed current geopolitical tensions, describing them as a “new age of great power rivalry” characterized by political volatility and economic mercantilism. He emphasized that globalization is undergoing significant changes, stating, “I’m not declaring globalization dead, but it is being radically reconfigured around us.”
Addressing economic disparities and social challenges in Western countries, Mandelson acknowledged that many regions have been left behind by globalization’s uneven benefits. He credited former President Trump for recognizing these issues: “President Trump’s acute political instincts in identifying the anxieties gripping not only millions of Americans but also far more pervasive global trends.”
Mandelson stressed the importance of strengthening alliances and maintaining common international standards. He stated that “we must reboot the transatlantic alliance” to ensure peace through military, economic, and technological strength.
In light of ongoing conflicts such as Russia’s invasion of Ukraine, Mandelson urged European nations to bolster their defense capabilities. He remarked on Britain’s commitment to increased defense spending: “We will become NATO’s fastest-innovating nation.”
Discussing economic collaboration between Britain and America, Mandelson highlighted shared interests in trade and innovation. He noted Britain’s goal to create a competitive investment environment in Europe.
On technological advancement, Mandelson expressed concerns about China’s growing influence. He emphasized cooperation between Britain and America to lead in scientific breakthroughs: “Artificial intelligence stands as the next great foundational technology.”
Concluding his speech with a call for deeper diplomatic efforts and alliances centered around technology, Mandelson conveyed optimism about future cooperation between Britain and America.
Peter Mandelson currently serves as the British ambassador to the United States.
