I have been watching Britain’s tightrope diplomacy between Trump’s America and Europe since last May. UK-US relations in Trump 2.0 started relatively friendly, but as the trans-Atlantic chasm grows due to the Donroe doctrine in the Western Hemisphere, Ukraine, Gaza, and Iran, the special relationship is critically questioned now. The British Royal Family is visiting Trump’s America in commemoration of the 250th anniversary of the Declaration of Independence, when intergovernmental relations are in discord. And ironically, Donald Trump is the most unconstitutional president in history, as shown in National Guard and ICE deployment in Blue States, and tariff diplomacy, which are completely incompatible with the ideals of the Founding Fathers. Despite such controversies, King Charles III and Queen Camilla are scheduled to visit from April 27 to 30, and subsequently, the Prince and Princess of Wales are expected to visit in June or July.
1. [Britain’s royal diplomacy in America]
Prior to talking about current bilateral relations, let me mention the history of the royal family and the American people. The Boston Tea Party, which led to the American Revolutionary War, was not a protest against the British monarchy originally, but an appeal for the rights as Englishmen as declared “no taxation, without representation”. In the early days, newly independent America was anti-British, but as its democracy matured, its border dispute with Canada was settled, and its internationalism rose towards the new century, the Anglo-American relationship gradually developed into the special relationship of the latter days. Ever since the future Edward VII visited the United States as a prince in 1860, royal visits were very helpful in nurturing a favorable image of Britain among the American public. In 1939, when World War II was almost breaking out, George VI and the future Queen Mother Elizabeth met President Franklin Roosevelt to mitigate the epidemic of America First isolationism among American citizens.
Most importantly, Elizabeth II and Prince Phillip visited the United States in 1957 on the occasion of the 350th anniversary of the English settlement in Jamestown, to heal ruptured Anglo-American relations by the Suez Crisis. However, will King Charles and Prince William foster a friendship between the two countries? Remember, President Donald Trump mocked Prime Minister Keir Starmer during the Iran war. Trump called independently deployed Royal Navy aircraft carriers in the East Mediterranean toys, and denounced Starmer as a coward because he did not give complete permission for the USAF to use RAF air bases. (1) Ultimately, would the king give credit to Trump’s right-wing populism? To answer those questions, let me talk about British diplomacy with Trump’s America in his second term.
2. [The special relationship with America in Trump 2.0]
It was Britain’s imperative to stabilize the special relationship with the United States, no matter how disruptive the incoming president was, and repair the damage of Brexit in Europe, while the Russian invasion of Ukraine poses critical threats to the Euro-Atlantic sphere. In such a trans-Atlantic security environment, the Starmer administration was inaugurated shortly before Donald Trump was reelected. When Trump’s second term started, Britain reached relatively favorable agreements, compared with the EU and Japan. Notorious Trump tariffs were lower, and a huge US investment in the UK tech industry was agreed through the TPD (Technology Prosperity Deal). Furthermore, the invitation to the royal dinner at Buckingham Palace satisfied Trump’s childish vanity. It appeared that Starmer managed to stabilize the relationship with Trump’s America.
However, towards the end of the last year, Trump resorted to assaults on NATO allies increasingly, such as claiming annexation of Canada and Greenland, raising tariffs furthermore, and withdrawing support for Ukraine. The regime ousting of Venezuela was done almost effortlessly, and Starmer embraced the consequence. But he suspended intelligence sharing with the United States, because global concerns were raised about the legality of US attacks on a Venezuelan drug smuggling boat in the Caribbean Sea, where Britain and other European nations have overseas territories. (2) And then, the war in Iran inflicted a fatal blow on UK-US relations. Globally, Trump’s attack on Iran is criticized for a lack of international legal grounds, poorly defined strategic goals of the war, Israeli influence on American decision-making, and so forth.
Along with problems such as asymmetric warfare, energy price, and the Hormuz Strait, Peter Ricketts, who served as the Chairman of the Joint Intelligence Committee of the Blair administration and the National Security Advisor of the Cameron administration, comments that Prime Minister Benjamin Netanyahu wants to eliminate the threats of Iran and its proxies for the legislative elections by late this October. (3) Meanwhile, Trump’s first-term National Security Advisor John Bolton says that Trump wanted a quick and efficient war against Iran as he did in Venezuela for the midterm elections this November. (4) Though both leaders do not share the same intention, we have to remember that they are quite election-oriented.
From British perspectives, Trump’s war against Iran is disrespectful to postwar Anglo-American relations. Jean-Marc Vigilant at the French Institute for International and Strategic Affairs (IRIS) contrasts British and French trans-Atlantic strategy after the Suez Crisis. In order to avoid an unexpected clash. Britain stepped toward close strategic contacts with the United States to have some influence on its decision-making and keep its military presence in Europe. On the other hand, France sought strategic autonomy from the United States by developing its sovereign and independent nuclear weapons and withdrawing from NATO's integrated military command. (5) In the Gulf War by George H. W. Bush and the Iraq War by George W. Bush, Britain was in strategic contact with America. But in the Iran War, Trump talked with Netanyahu only, and Britain was sidelined. Why should Starmer help him?
Quite importantly, the Iran War is so unpopular in Europe that any support for Trump and Netanyahu could ruin the pledge to increase defense spending against Russia among NATO allies. (6) Therefore, Britain is taking increasingly French-styled strategic autonomy and hosted a conference on freedom of navigation in the Hormuz Strait. (7) Pro-Trump MPs such as Reform UK Leader Nigel Farage and Conservative Leader Kemi Badenoch demanded that Starmer join the war for the special relationship when it broke out, but now, they have withdrawn their support for Trump. This is also the case with ex-Labour Prime Minister Tony Blair, who is a senior executive of Trump’s controversial Board of Peace. (8) They should have remembered that even a Thatcherite Lord Chris Patten argues that Britain should not assume the special relationship with Trump’s America. (9)
3. [America and the world order in chaos]
Furthermore, I would like to mention American foreign policy. Last June, when the war in Iran was not imminent, Robert Kagan at the Brookings Institution commented that Trump turned the US military into his private army when he deployed National Guard and ICE in Blue States unconstitutionally. Also, he aligns with Netanyahu as both share ethnoreligious nationalism, which is completely at odds with universal liberal values of the Founding Fathers. As Kagan argues, Secretary of Defense Pete Hegseth is advancing anti-DEI initiatives in the US military, and he even likens the war in Iran to a crusade, both of which are deeply rooted in white Christian nationalism. Therefore, Kagan concludes that any success Trump claims in Iran will be a victory for autocracies around the world. (10) Continual frictions between Trump and US allies make China and Russia pleased. America has lost trust from allies, furthermore, in the Iran War. This would accelerate not only the isolation of America in geopolitics but also the fall of the Enlightenment, which would turn the world, including America itself, less secure. (11)
To my eyes, ex-President Barack Obama was also too post-American, but his foreign policy could have been compatible with the world order of the middle power alignment, which was proposed by Canadian Prime Minister Mark Carney. On the other hand, Trump is excessively post-Enlightenment, which has made America completely isolated. That is savage enough to return the world really to the Stone Age. In his latest article of the Atlantic Journal, Kagan calls Trump’s America a rogue superpower. He mentions the ongoing war, “The Iran war is global intervention “America First”–style: no public debate, no vote in Congress, no cooperation or, in many cases, even consultation with allies other than Israel, and, apparently, no concern for potential consequences to the region and the world.” That makes America lonely and dangerous, but never great. (12) Thereby, Trump destroys the world order that has brought innumerable benefits to the United States and its allies.
4. [The post-Enlightenment trend and the rise of the civilizational state]
The final point of the discussion is the political transition in the global context. Aaron McKeil at the London School of Economics mentions that in the post-Enlightenment era, as seen in viral right-wing populism in the West and geopolitical challenges by authoritarian powers, civilizational state values would replace liberal cosmopolitan ideals. Then what is a civilizational state? It is a kind of ethnocultural sphere of influence claimed by a great power or a regional power as a body of governance beyond its own territory. This is typically seen in Russia’s Russkiy Mir and China’s “Great Rejuvenation of the Chinese Nation". Domestically, a civilizational state focuses on national unity through ethnocentric traditionalism. Trump has trashed America’s hegemonic advantage in universal cosmopolitan ideals with White Christian nationalism and turned it into an authoritarian civilizational state like Russia and China. Those civilizational state advocates are not necessarily retrospective, according to McKeil. They are often aligned with new techno futurists who are keen on winning the great power rivalry in the tech industry. (13) This is typically seen in the TPD in current Anglo-American relations.
[Conclusion]
Deplorably, America elected the least qualified president to commemorate the 250th anniversary, though King Charles is visiting this historic landmark of democracy in America. The shift of Starmer’s diplomatic stances shows us that it is no use flattering Trump just to avoid a clash with him. Even pro-Trump Prime Minister Giorgia Meloni rejects Trump’s demand to admit the USAF to use air bases in Italy. In domestic politics, Trump fired so many loyalists. Returns are hardly expected through sycophancy. Among G7 leaders, Japanese Prime Minister Sanae Takaichi is so eager to conform to Trump. Her crazy dance was ridiculed both at bilateral meetings in Tokyo and Washington, DC. But I would rather call attention to her impolite laugh at the autopen portrait of former President Joe Biden. That implicitly indicates that she lost the sense of political balance. I would suggest that Takaichi rename MAGAichi, as she is dishonorably fascinated with Trump so much.
Among the British public, this visit is unpopular, and they want the King to cancel the tour, according to the You.gov poll last March. (14) Considering the nature of the Trump administration and his character, even this state visit is unlikely to improve the state-to-state relations of both countries. Therefore, there is no need for King Charles to make an impression as if giving credit to Trump. Meanwhile, Britain’s royal diplomacy has nurtured a friendship with the United States for more than a century. Focusing on people, instead of Trump, the King’s visit for the 250th anniversary would be an opportunity for them to recall the ideals of the Founding Fathers. The British royal family is popular among Americans, historically.
Since Trump’s America is a civilizational state incorporating new techno futurism, a huge business deal such as the TPD will be a “hostage” to stop Trump from fatally breaking up the bilateral relationship, even though he escalates blaming Starmer as relations with Britain grow worse. He never suggested withdrawing this tech deal, despite his penchant for madman diplomacy. This is a lesson for world leaders who want to stabilize the relationship with Trump’s America through flattery.
In this historic event, despite the chaos that Trump brings at home and worldwide, will King Charles III have a favorable impact on democracy in America and trans-Atlantic relations? He spoke of the late Queen Elizabeth II’s legacy of optimism that "goodness will always prevail and that a brighter dawn is never far from the horizon", before the state visit to the United States of America. (15)
Footnotes:
(8) “The
UK’s right wing is suddenly silent about supporting war in Iran”; News Agents;
11 March, 2026
(14) “By 49% to 33%, Britons say King Charles should cancel official visit to USA”;You.gov; 26 March 2026






