The war in Ukraine has long been a test of Western unity. Four years after Russia launched its full-scale invasion, however, the question is no longer simply how the West can help Ukraine withstand Russian military might. It is increasingly whether the West still agrees on what that requires.
Donald Trump’s latest deal with Vladimir Putin offers an indication of where things may be heading. In an effort to bring diesel prices down ahead of the November midterm elections, the US president has agreed to ease sanctions on Russian diesel exports until April 2027. Whether this move will meaningfully lower prices for American consumers, let alone help Republicans retain control of Congress, remains uncertain. What is considerably less uncertain is its political significance.
Sanctions were never only an economic instrument. They were more a demonstration that Russia could not continue its war against Ukraine without paying a price for it. By relaxing those restrictions to address a domestic political problem now, Trump has effectively placed an immediate electoral consideration above the strategic Western objective of maintaining pressure on Moscow.
The contrast between how political leaders deal with the matter on different sides of the Atlantic could not be more striking. Just days before Trump’s diesel deal with Moscow, German Chancellor Friedrich Merz travelled to the Ukrainian capital with further pledges of military and financial assistance, including expanded cooperation between the German and Ukrainian defence industries. His message from Kyiv was unmistakable: Ukraine can rely on Germany.
Granted, one might argue that Trump is simply trying to contain rising fuel prices and protect his party's electoral prospects. There is little reason to assume that every decision made in Washington is necessarily a signal of a fundamental realignment. But intentions are only part of the story. Political alliances are shaped by what their members actually do, not only by what they say they stand for.
And this is where the implications of sanctions relief on Russia, even if temporarily, become difficult to ignore. If the United States is prepared to ease economic pressure on Russia while European governments continue to commit resources to Ukraine's defence, the burden of confronting Russian aggression will increasingly fall on Europe. The transatlantic alliance may survive this divergence, but its unity on Ukraine has already suffered a serious blow. As a result, the trust issues across the Atlantic, already at alarming dimensions because of previous frictions over Greenland and tariffs, are set to deepen.
The question, then, is whether Europe is prepared to assume the responsibility that comes with such a shift. Supporting Ukraine is not simply a matter of financial commitments or weapons deliveries. It requires political endurance, strategic coordination and the willingness to accept costs that may not produce immediate returns.
Above all, it requires an understanding that the consequences of this war extend far beyond Ukraine's borders. The choices made today will help determine whether European security remains a shared responsibility across the Atlantic — or becomes a burden Europe must increasingly carry on its own.
