It's the bilateral summit every European leader wants to be at.
And for good reason. On Friday, Donald Trump is scheduled to meet Vladimir Putin in Alaska to discuss ending the war in Ukraine.
Territorial concessions are likely to be discussed, and Europe (not least Ukraine) doesn't want its borders to be redrawn through force.
But, as things stand, there are no invites for the country being invaded, nor the continent it sits in.
"Brace ourselves for some pretty outrageous Russian demands," warns Lord Simon McDonald, a former head of the UK Foreign Office.
