>> The leaders of the European Union are going to be in Brussels for the next two days trying to plot a course for the block after Britain leaves. I'm Alistair MacDonald, Reuters EU Bureau Chief, in Brussels. So this is Theresa May's last summit as British Prime Minister before she formally declares that Britain is leaving the European Union this month, and start a new phase, a sort of half-in, half-out phase for the next two years.
The formal agenda of this summit of 28 leaders on Thursday is fairly straightforward, quite routine, talking about the European economy, where they are in controlling the migration crisis. Some concerns about Russian activity in the Balkans, and what they can do to shore up the European position in the Balkans.
But lurking behind all of this summit, and especially a further summit on Friday morning, which will only involve the 27, and not Theresa May as they discuss how to take the European Union forward without Britain after Brexit. Lurking behind all of this is the question of how Brexit is going to change the dynamics of the European Union.
And how this could, perhaps, worsen an already fractious relationship between east and west, rich and poor, the payers and the takers from an EU budget that is gonna get a huge hole in it once Britain takes its money out.