The meeting is co-chaired by António Costa and Irish Taoiseach Micheál Martin. The European Council says 48 heads of state or government were invited, including Canada as a guest; this is not a count of actual attendance.
ITV reports that Volodymyr Zelensky arrived on Wednesday evening and that the British programme includes discussions on Ukraine and hybrid threats. The official agenda also covers innovation, cross-border connections and affordable energy.
The summit precedes a separate informal meeting of EU leaders on 13 November. The sources consulted describe the programme and meetings, but do not yet establish a final tally of decisions.