内容摘要：The men are still in Kryvyi Rih and despite the shock of the explosion, Mr Swiacki said he has not been deterred him from continuing his aid work in Ukraine.

The men are still in Kryvyi Rih and despite the shock of the explosion, Mr Swiacki said he has not been deterred him from continuing his aid work in Ukraine.

And that means departments whose budgets are gobbled up by providing public services every day, like police officers, care for the vulnerable or primary schools, are likely to feel the heat.There are multiple arguments, planted like political landmines, any of which could explode across Whitehall before the review on 11 June.

There is even a hunt for savings in Downing Street, which one source describes as "mad", at a time when "if you are worried about delivery and grip, spend money in No 10!".There are tensions over council budgets, depleted after years while demands on them grow. There's uncertainty over cash to build affordable homes over the long term, and money earmarked to help deprived areas grow. There is worry the budget to insulate millions of homes might be raided.There's concern that plans to improve police numbers and performance and halve violence against women and girls might not be allocated enough cash. And there's a conversation about whether capping bus fares is really value for money.

"The money is so difficult they are having big fights about small amounts," one source says.Capping bus fares only costs about £200m - pennies when it comes to the overall government budget.

"Only one in six passengers use it - so for £200m that money could be working harder," another source tells me, "but the politics wrapped around it mean if you touch, it is a third rail".

Under pressure, different ministers and their teams are taking what could diplomatically be described as very different approaches.Tony Blair, who opened the doors in 2004, recognised this in his autobiography A Journey. The "tendency for those on the left was to equate concern about immigration with underlying racism. This was a mistake. The truth is that immigration, unless properly controlled, can cause genuine tensions… and provide a sense in the areas into which migrants come in large numbers that the community has lost control of its own future… Across Europe, right wing parties would propose tough controls on immigration. Left-wing parties would cry: Racist. The people would say: You don't get it."

Sir Keir has felt some of that heat from his own side since launching the White Paper. In response to his warning about Britain becoming an "island of strangers", the left-wing Labour MP Nadia Whittome accused the prime minister of "mimic[king] the scaremongering of the far-right".The Economist, too, declared that Britain's decades of liberal immigration had been an economic success - but a political failure.

There is a world of difference between Keir Starmer and Enoch Powell. Powell believed Britain was "literally mad, piling up its own funeral pyre" and that the country was bound to descend into civil war. Sir Keir says he celebrates the diversity of modern Britain.But even if his plan to cut migration works, net migration will continue to flow at the rate of around 300,000 a year. Sir Keir's plan runs the risk of being neither fish nor fowl: too unambitious to win back Reform voters; but illiberal enough to alienate some on the left.