The political high wire act of global diplomacy is not for the faint-hearted, and Sir Keir Starmer – once the forensic and cautious lawyer – is now tiptoeing across one of the most perilous geopolitical tightropes in recent memory.
The UK Prime Minister has quietly, yet firmly, placed himself at the centre of an unfolding drama that could define his legacy: the search for peace in Ukraine.
With the looming shadow of Donald Trump ready to cast his unpredictable influence over the West’s relationship with Ukraine, and Emmanuel Macron’s relentless push for European leadership in global affairs, Starmer has found himself positioned as the pragmatist in the room – the man who might just stop Ukraine from slipping into the abyss.
But does he have the clout to succeed where others have failed? And more to the point, does he have the stomach for the fight?
Ever since Trump’s blistering verbal barrage against Volodymyr Zelenskyy – backed by his Vice-President JD Vance – there’s been an air of inevitability about America’s shifting stance. Trump’s transactional approach to diplomacy means he sees Ukraine as a bargaining chip rather than a cause to champion. And Putin knows it. The danger now is that, with US support dwindling, Ukraine will be left exposed, forced into negotiations on Russia’s terms.
Enter Starmer and Macron, who in an act of pure realpolitik, have sought to move the chess pieces before Trump and Putin get a chance to rig the board. By pushing forward a European-led peace proposal, Starmer and Macron have cleverly sought to reframe the debate – Europe will negotiate peace with Ukraine, not on behalf of it. This removes the fantasy of a US-Russia carve-up, forcing Trump to acknowledge that his leverage is limited.
Macron, ever the showman, is positioning himself as the architect of peace. But Starmer, true to form, is playing the long game – quietly but decisively embedding Britain as a key broker in what could be the most consequential diplomatic crisis of the decade.
The danger for Starmer is that history is littered with well-intentioned peace efforts that have collapsed under the weight of brutal realities. As much as he may wish to forge a path to resolution, the unshakable truth is that Vladimir Putin has no interest in ending this war under conditions that preserve Ukrainian sovereignty. And without the firm backing of the United States, Europe alone cannot offer Ukraine the security guarantees it needs.
The idea of an Anglo-French ‘reassurance force’ on Ukrainian soil, as mooted in some circles, is a non-starter if the US isn’t behind it. Trump’s obsession with avoiding another global conflict – bordering on paranoia – means he will never sign off on an initiative that risks direct confrontation with Russia. And yet, without American backing, any European security initiative will lack teeth. Starmer is acutely aware of this, which is why his diplomacy hinges not just on European unity, but on keeping the door open to Washington, no matter who sits in the Oval Office.
There is a brutal paradox at play here: Starmer is trying to force himself into the role of peace broker, even though the fundamental ingredients for a viable settlement – Russian willingness and American backing – are absent. Yet, in doing so, he is achieving something significant: keeping Ukraine in the diplomatic conversation at a time when it risks becoming a forgotten conflict.
Ukraine’s battlefield resilience, powered by its drone warfare capabilities and extraordinary tenacity, has ensured that Putin’s dream of a quick victory has turned into a slow, grinding nightmare. The numbers are stark – Russia has suffered staggering losses, with Western sources estimating that 400,000 Russian troops have been killed or wounded in return for minimal territorial gains. But Ukraine’s ability to continue fighting hinges on Western support and that support is looking increasingly fragile.
If Trump pulls the plug entirely, Ukraine will face an existential crisis. Starmer’s gamble is that, by moving now to secure European-led security guarantees, he can prevent the worst-case scenario – a Ukraine forced into humiliating concessions under Russian pressure.
Starmer prime ministership was never meant to be about war and peace. He came to power with a mandate to fix Britain’s crumbling public services, rebuild trust in government, and get the economy back on track. But history has other plans for him. If he succeeds in positioning the UK as a credible force for peace, he will be remembered not as a technocratic manager, but as a leader who reshaped Britain’s place on the world stage.
But if he fails – if Ukraine collapses, if Europe’s security fractures, if Trump dismisses Britain’s efforts as irrelevant – he risks becoming yet another British Prime Minister whose global ambitions were undone by the brutal realities of realpolitik.
For now, Starmer is playing the game shrewdly. Whether he emerges as the world’s peacemaker, or just another well-intentioned statesman swallowed by events beyond his control, remains to be seen. One thing is certain: the stakes could not be higher.
Josh Moreton