Video footage has emerged which appears to show the President of the European Commission, Jean-Claude Juncker, 'drunk' at an EU summit.

In the clip, which has just surfaced online, Juncker can be seen repeatedly slapping EU leaders, hopping from foot to foot and dancing - leaving many to question whether he was under the influence of alcohol.

He was also heard calling the Hungarian Prime Minister 'dictator' in front of those present at the EU-Eastern Partnership summit.

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Video footage has emerged which appears to show the President of the European Commission, Jean-Claude Juncker, 'drunk' at an EU summit

Juncker can be seen repeatedly slapping EU leaders, hopping from foot to foot and dancing - leaving many to question whether he was under the influence of alcohol

The footage was filmed at the EU-Eastern Partnership summit in Latvia in May 2015 but only surfaced online last night, before being widely shared across the internet.

The clip, entitled 'Jean-Claude Juncker drunk and bitch slaps leaders', shows Juncker in high spirits, making his peers laugh as he slaps EU leaders, kisses one on the head and jokes around.

The president merrily greets other EU leaders at the event, patting them on the cheeks, putting his arms around their shoulders - and even performing a jig on the spot.

While his lighthearted and jovial behaviour appears to make his peers giggle, at one point he gets pulled back and made to stand still.

He also kisses one leader on the cheek at one point in the video.

Jean-Claude Juncker, pictured here in 2014: It appears 'slapping' other leaders is something of a habit

Greece's Prime Minister Alexis Tsipras (left) was also welcomed with a friendly tap by the European Commission President ahead of another summit in 2015

Juncker can also be seen embracing French President Francois Hollande, who laughs off the exchange before moving on.

Donald Tusk is also filmed standing next to Juncker, appearing somewhat uncomfortable with the situation.

But it seems to merry behaviour is rather commonplace for the EU President - he is often photographed slapping world leaders on the cheek as a way of greeting them.

The French Minister of Ecology, Sustainable Development and Energy, Segolene Royal, and Jean-Claude Juncker pictured before a meeting in Brussels this week