Kaja Kallas faces diplomatic backlash over Ukraine push and US tensions

Kaja Kallas has spent her first months as the European Union's top diplomat fighting on two fronts: against member states who say she moves too fast and without consultation, and against a US administration that has shown little patience for European moralising. The former Estonian prime minister took over the European External Action Service (EEAS) in December 2024, inheriting a diplomatic machine facing budget cuts and a strategic environment that has shifted sharply since the Munich Security Conference in February.

First day friction over Ukraine language

The trouble began on day one. Travelling to Kyiv, Kallas posted on social media: "the European Union wants Ukraine to win this war". The line was not new, EU leaders have said versions of it since 2022, but the timing and the messenger mattered. Several diplomats said the High Representative, less than 24 hours into the role, had gone beyond the settled formulation that the EU supports Ukraine "for as long as it takes". One EU diplomat put it bluntly: "She is still acting like a prime minister." The remark captures a recurring complaint: that Kallas operates with the instinct of a national leader who can decide and announce, rather than an EU official who must negotiate 27 capitals before speaking.

The ammunition proposal that blindsided Paris and Berlin

The most concrete flashpoint came after the Munich Security Conference in February. US Vice President JD Vance had dismissed Russia as a primary concern, signalling a potential American withdrawal from the artillery supply chain that has kept Ukrainian guns firing. Kallas reacted by drafting a two-page paper on a Sunday evening, asking the 27 member states to provide at least 1.5 million rounds of artillery ammunition, with contributions calibrated to the size of each economy.

The proportional formula was deliberate. Estonia, Denmark and other northern and eastern members have given far more per capita than France, Italy or Spain. Kallas's calculation was that a GDP key would force the larger economies to close the gap. The reaction was immediate. Capitals complained they had received no warning, no informal sounding, no chance to shape the text. Two diplomats from eastern and northern Europe, generally supportive of Kallas, acknowledged the process had been poorly managed. "This sort of came out of nowhere," one said. "The process could have been better managed to avoid taking people by surprise." The same diplomat added a revealing caveat: "If she'd done the perfect process they would have hated it anyway."

The plan was scaled back within days. By the time foreign ministers gathered, the ambition had been reduced to a €5 billion commitment for artillery shells as a first step. Even that figure remains uncommitted in several capitals. The episode exposed a structural tension: the High Representative has no budget of her own, no troops, and no power to compel. She can only propose. When the proposal arrives without the groundwork, it looks like pressure rather than leadership.

Washington meeting cancelled amid preparation questions

The ammunition push coincided with a diplomatic setback across the Atlantic. A planned meeting between Kallas and US Secretary of State Marco Rubio in Washington was cancelled at the last minute in late February. A former senior EU official, speaking on condition of anonymity, delivered a stinging assessment: "She went with her hands in her pockets." The criticism was that Kallas had not offered the Americans a concrete deliverable, a specific European commitment, a joint statement, a coordinated sanctions package, that would justify the meeting. Kallas's spokesperson disputed the account, saying the meeting had been confirmed and well prepared. But the cancellation fed a narrative in Brussels that the new High Representative struggles to operate the levers of transatlantic diplomacy at a moment when those levers are stiffening.

The tweet that broke the transatlantic discipline

If the Rubio cancellation was a procedural wound, the Oval Office clash between Donald Trump, JD Vance and Volodymyr Zelenskyy on 28 February produced a political one. In the hours after the televised berating of the Ukrainian president, Kallas posted: "the free world needs a new leader". The line captured the outrage across much of Europe. It also violated an unwritten rule that the EU's top diplomat does not publicly declare the US president unfit to lead the western alliance. "Most countries don't want to inflame things with the United States," a sixth diplomat said. "Saying the free world needs a new leader just isn't what most leaders wanted to put out there." The tweet complicated the work of national leaders, Emmanuel Macron, Friedrich Merz, Giorgia Meloni, who are trying to keep a functional channel to a White House that has already imposed tariffs on steel and aluminium and threatened more on cars.

An outsider in a conservative EU

Kallas's difficulties are not only stylistic. She arrives from Estonia, population 1.4 million, smaller than Paris, and from the liberal Reform Party, which performed poorly in the 2024 European Parliament elections. The European Council is now dominated by centre-right and conservative leaders: Macron in France, Merz as chancellor-in-waiting in Germany, Meloni in Italy, Donald Tusk in Poland. The High Representative serves at the pleasure of the Council, and the Council's mood has shifted toward strategic autonomy defined by national capitals, not Brussels institutions. Meanwhile, the EEAS itself faces a proposal to cut staff and funding, a signal that member states want a leaner diplomatic service, not a more ambitious one.

Defenders argue she was hired to disrupt

Not everyone in Brussels sees failure. An EEAS official, defending Kallas against the criticism, framed her mandate in existential terms: "They hired a head of state for a reason, not to moderate quietly and find the lowest common denominator but to push things forward. Many people argue we are in 1938 or 1939. It's not the time to hide behind processes. European leaders keep calling for more Ukraine aid, ok cool, time for deeds not just words." The 1938 comparison, Munich, appeasement, the failure to rearm, is a staple of Estonian strategic thinking. It explains Kallas's urgency. It also explains why she grates on capitals that do not share Estonia's threat perception. Spain and Italy, several officials noted, do not regard Moscow as an imminent danger to the EU in the way Tallinn, Riga, Vilnius, Warsaw and Helsinki do. "If you listen to her it seems we are at war with Russia, which is not the EU line," one EU official complained.

Northern and eastern backing holds for now

Kallas retains strong support among the northern and eastern member states. Danish Prime Minister Mette Frederiksen said publicly: "Overall, we are very happy with her." The Baltic and Nordic capitals see her as one of their own, a leader who understands the Russian threat viscerally and is willing to spend political capital to keep Ukraine supplied. But that bloc is not a majority in the Council. The Franco-German axis, reinforced by Italy and Spain, sets the pace on defence policy. The European Defence Industrial Strategy, the debate on common borrowing for rearmament, the negotiation of the next multiannual financial framework, all of these are being driven by Paris and Berlin, with the High Representative on the margins.