First Minister Mark Drakeford has claimed that the bonds that keep the four nations of the UK together are being torn apart by Brexit and by what he called "successive couldn’t-care-less Tory governments".
His speech to the Labour party conference was seen by his supporters as a chance for him to set out Welsh Labour's distinct approach after bruising few days of internal arguments in the party.
In a sharp rebuke to the party's national executive for over-riding Welsh Labour on MPs' reselection, he observed that if they want to see a UK founded on solidarity, equality and respect, "we should want to see it in our party too".
One AM commented that "I like this newly emboldened Mark Drakeford".
The First Minister was addressing the UK Labour conference for the first time as Welsh Labour leader. His speech in Brighton came at the end of a few days when Labour itself has lacked unity.
Labour leader Jeremy Corbyn intervened to halt moves to remove his deputy Tom Watson from office. But Mr Corbyn backed a decision by the party executive, to take control of MPs' reselection in Wales, which had infuriated Mark Drakeford.
And the two men are far apart on Brexit. Mr Corbyn wants to remain neutral on whether the UK should stay in the EU or leave with a deal negotiated by as Labour government.
That choice would be put to a referendum. Mr Drakeford reiterated in his speech that Welsh Labour would campaign to remain in the European Union, in line with the policy of his government.