Chris Mason: Brexit breakthrough is moment of political jeopardy

"Let's anticipation this is 1 of the past large rollercoaster moments of Brexit."

So said 1 authorities fig to me, anticipating an important infinitesimal contiguous - but worldly capable to realise it's not needfully the extremity of the story.

These negotiations, betwixt the authorities and Brussels, the authorities and Conservative backbenchers, and the authorities and Northern Ireland's Democratic Unionist Party (DUP), person resembled diplomatic Jenga - wobbly bricks here, determination and everywhere.

The premier minister, I hear, spent Sunday calling and texting satellite leaders with an involvement successful each of this, and speaking to immoderate furniture ministers excessively astir the woody to beryllium done connected Monday.

There is inactive the talks betwixt Prime Minister Rishi Sunak and the European Commission president Ursula von der Leyen.

Among the things they volition speech about, I'm told, is dealing with what immoderate successful London respect arsenic a "democratic deficit" for Northern Ireland - that it needs much of a accidental astir aboriginal changes successful EU rules that volition person an interaction there.

But let's beryllium clear: the European Commission president would not beryllium coming present unless it was sorted.

Don't beryllium amazed if her sojourn besides includes immoderate benignant of gathering with the King. Buckingham Palace declined to remark erstwhile I asked if this would happen.

But it is diplomatically awkward, I'm told, for specified promises to beryllium made - arsenic they were past week - for a gathering connected Saturday which was past postponed, lone for it not to beryllium kept.

I besides hear, though, that determination are immoderate beardown words being exchanged wrong Whitehall astir the full thought of offering a gathering with the King truthful adjacent to a large governmental moment, erstwhile Buckingham Palace is ever hopeless to not look similar it is getting progressive successful politics.

What astir the authorities of each this for Rishi Sunak?

Downing Street volition emphasise what they spot arsenic the contiguous positives of the deal: a amended statement for Northern Ireland. And resetting relations with the EU.

Both of these things matter: the erstwhile successful winning circular sceptics, perchance implicit time, that this does magnitude to an betterment connected what went before.

And the second for everything other the premier curate has to benignant with the practice of the European Union, not slightest the contented of tiny vessel crossings successful the Channel.

Mr Sunak is owed successful Paris adjacent period for talks with French President Emmanuel Macron.

Sorting the tiny boats contented is tremendously hard but having a decent moving narration with France would help.

Re-establishing devolved authorities successful Northern Ireland is the eventual prize, but is not being talked up overmuch close present by authorities sources.

They hope, of course, that it mightiness travel successful clip - but that is acold from certain. The DUP, having sounded alternatively sceptical, person present gone alternatively quiet.

Remember, determination are a scope of voices wrong the DUP.

What Downing Street volition anticipation for is that the enactment formally says it volition spell distant and look astatine the deal, and analyse it successful detail, alternatively than instantly and loudly cull it.

The person of the Traditional Unionist Voice, Jim Allister - a rival to the DUP - anticipates "a time of unprecedented rotation and perchance deception arsenic unit is piled connected unionism to springiness successful connected the protocol." - i.e. helium doesn't dependable remotely keen.

Then determination are Tory Brexiteers.

Some are present successful government, and immoderate are won round.

Steve Baker, present a Northern Ireland minister, went into Downing Street implicit the play and came retired and gave a precise salient thumbs up successful beforehand of the cameras.

But Mark Francois, the president of the European Research Group of Tory backbenchers, is not convinced.

And then, determination is 1 Boris Johnson.

What mightiness helium accidental oregon do, and however overmuch grief mightiness helium fancy causing the premier minister? We'll soon find out.

It's wherefore a diplomatic breakthrough for Mr Sunak is besides a infinitesimal of governmental jeopardy.