Jean-Claude Juncker seen stumbling and swaying helped by leaders before Nato gala dinner

European Commission president Jean-Claude Juncker was seen stumbling, walking awkwardly and losing his balance several times ahead of a gala dinner at the Nato summit in Belgium.

The European Union leader was stumbling and swaying to the extent that the presidents of Finland and Ukraine, among others, had to help keep the 63-year-old upright.

Dutch Prime Minister Mark Rutte also stepped in to guide Mr Juncker at the event in Brussels on Wednesday night.

Jean-Claude Juncker is helped up the stairs at Parc Cinquantenaire in Brussels (AP)

Mr Juncker has said he suffers from sciatica that sometimes affects his movements.

Portuguese Prime Minister Antonio Costa said on Thursday that Mr Juncker had complained of back pain.

“He doesn’t have a serious health problem as far as I am aware of but he does have a back problem for some time,” Mr Rutte said.

“It is a problem in a sense that he sometimes has these pain attacks.”

Leaders of European institutions had been invited to join Nato leaders for a meeting and dinner.

- Press Association

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