The answer is of course the Committee of Ministers of the Council of Europe (CoE), whose Chairmanship Ukraine will take on on 11 May.
The UK, in turn, takes over the chairmanship from Ukraine in November. CoE Chairmanships are held for six months, following the English alphabet (it is a pleasing coincidence that Ukraine and the UK often come together at meetings and conferences of all kinds because of our alphabetical proximity).
Established in 1949 by the Treaty of London, The Council of Europe now has 47 member states covering almost the entire European continent. The headline aim is to create a common democratic and legal area ensuring respect for three fundamental values: human rights, democracy and the rule of law.