The United States has ignited a global economic firestorm by imposing a blanket 10 percent import tariff on all incoming goods, effective this weekend. President Donald Trump, showing no signs of retreat, is set to sharply raise these tariffs again next week. The aggressive escalation has sent shockwaves through international markets and prompted an outcry from global leaders — with Britain making its voice heard in no uncertain terms.
Prime Minister Keir Starmer minced no words in an op-ed for The Sunday Telegraph, declaring that “the world as we knew it is no more.” He condemned the abrupt and unilateral measures taken by Washington, warning of their potentially devastating impact on global trade stability. Despite his alarm, Starmer committed to pursuing an economic deal with the United States, while pledging to shield British industries from the fallout of what he called a brewing global economic storm. His remarks reflect mounting concern in Westminster over Britain’s exposure to a new wave of protectionism that threatens to destabilise post-Brexit trade ambitions.
The effects are already tangible. Financial markets have nosedived, with the FTSE 100 shedding nearly 4% in early trading, echoing losses across Frankfurt, Paris, and New York. European economies — particularly Germany — are reeling from the announcement of 25% tariffs on steel, aluminium, and vehicles, with an additional 20% slapped on nearly all other exports starting Wednesday. The European Union has warned of retaliation but remains fractured on how to respond effectively.
Friedrich Merz, widely expected to be Germany’s next chancellor, called for immediate action to preserve German competitiveness. He warned that the international equity and bond markets were entering a dangerous phase of decline, and that Germany’s economic strength could rapidly erode if decisive steps were not taken. In a statement to Reuters, Merz urged that restoring Germany’s international market standing must become a top priority in ongoing coalition negotiations. He reiterated calls for tax cuts, reduced bureaucracy, and lower energy costs — a signal that Berlin may seek structural reforms to buffer against the economic fallout triggered by Trump’s tariffs.
Elsewhere, leaders are drawing their lines. Canadian Prime Minister Mark Carney announced retaliatory tariffs of 25% on American vehicles, while Beijing plans to impose 34% duties on a wide range of U.S. goods from 10 April. Meanwhile, countries like Vietnam, Taiwan, India, and Indonesia are taking a different approach — opting for negotiation rather than reprisal, likely in an effort to avoid full-blown trade wars with the U.S.
Notably, the backlash is no longer limited to foreign governments. Within Trump’s own circle of backers, dissent is growing. Billionaire hedge fund manager Bill Ackman — a Trump supporter during the presidential campaign — warned that the administration is rapidly losing the confidence of the business community. In a post on X (formerly Twitter), he said the president should call for a 90-day “timeout” to facilitate negotiations and avert a trade catastrophe. Ackman cautioned that pushing forward with a tariff-fuelled trade war risks halting business investment, paralysing consumer spending, and inflicting irreparable damage to America’s international reputation — damage that, he argued, could take decades to repair.
Ackman further urged Trump to “take the time to fix a broken tariff system” instead of launching what he described as an economically suicidal path toward a “self-inflicted nuclear winter.” His comments reflect a growing sense of alarm among business leaders and investors, many of whom are scrambling to reassess supply chains, market forecasts, and risk exposure.
With Britain now navigating the fallout from these developments without the buffer of EU economic protections, the stakes are higher than ever. While Starmer’s reassurances may offer a degree of political clarity, British businesses are bracing themselves for the turbulence ahead — aware that in the absence of a coordinated global response, economic nationalism may soon become the new normal.
