An international summit on Ukraine where Volodymyr Zelenskyy was going to present a “victory plan” to western leaders has been formally postponed – though the Ukrainian president will try to organise a tour of European capitals instead.

Organisers said that the Saturday meeting of about 20 world leaders at the US Ramstein airbase in Germany would be rescheduled, a day after Biden had said he had to stay at home to respond to Hurricane Milton’s landfall in Florida.

Ukrainian sources said that Zelenskyy would travel to meet the German chancellor, Olaf Scholz, in Berlin on Friday – and potentially go on to visit other leaders as part of what sources described as a “European tour”.