It's round one in the UK's Brexit negotiations.
Flying the union Jack for the next four days of talks, Brexit Secretary David Davis.
Fighting the EU's corner is Michel Barnier.
The first flurry of negotiations comes with just 20 months until Britain is set to leave the EU.
A month ago the pair sized each other up as they exchanged gifts.
Now they will try to extract concessions from one another.
The first on the list is likely to surround any divorce bill the UK might pay into EU coffers.
Davis must find a way of keeping Brussels on side squaring any payment with the UK public.
The EU wants around 60 billion Euros from Britain.
But that's one of just four contentious issues set to be on the table.
Negotiators will break up into groups.
The rights of EU citizens living in post Brexit Britain will also be tackled.
As will what to do about Northern Ireland, which shares the UK's only land border with the EU.
Concrete announcements aren't expected when the first set of talks conclude Thursday (July 20).
But onlookers will be keeping an eye on the momentum and whether two appear to be on the right course.
From Late August to early October there will be three more weeks of talks.
With both sides hoping to report progress back to their higher powers.
The sense of urgency likely to be building by then.
On March 30 2019, deal or no deal, the UK and the EU are set to go their separate ways.