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Mr Juncker, who is President of the European Commission, implied that the new US President would ignore the bloc of 27 countries for two years before making any effort to visit. Mr Juncker said: "I think we will waste two years before Mr Trump tours the world he does not know." He added that Donald Trump's election as U.S. president poses risks for the relationship between the European Union and the United States.

GETTY•IG Jean-Claude Juncker slammed President Elect Donald Trump

He told an audience of students: "We will need to teach the president-elect what Europe is and how it works", adding that Americans usually had no interest in Europe. The Brussels bureaucrat added that Mr Trump's statements on security policy and the potential for America to leave NATO would have "pernicious" consequences. The politician added that Mr Trump was entirely ignorant of Europe and its workings.

. Jean-Claude Juncker made disparaging comments to students about Mr Trump

. Students asked Mr Juncker his thoughts on the future for international relations

The strong reaction from the EU leader comes after the tycoon, who won a shock election victory on Wednesday, praised Russian President Vladimir Putin and questioned the principle of collective defence in NATO. Meanwhile other European leaders flocked to offer their congratulations to Mr Trump despite previously criticising his comments - including British Prime Minister Theresa May. Jean-Claude Juncker, who is one of Europe's most powerful figures, said: "The election of Trump poses the risk of upsetting intercontinental relations in their foundation and in their structure."

. Mr Juncker was joined by President of the Ruopean Parliament Martin Schulz

Making matters worse, Mr Juncker decided to insult the intelligence of the new leader of the free world, recalling a past statement he made in which he seemed to think that Belgium, the country that hosts the headquarters of the EU and NATO, was a city. Mr Juncker has already pubclicly raised doubts about Trump's views on global trade, climate policy and Western security. The European leader's comments come after he was forced to reveal his staff were forced to re-write his speech congratulating the next President of the US in a frenzy - because it was dedicated to Hillary Clinton.

President-Elect Donald Trump in pictures Tue, December 13, 2016 Donald John Trump is an American businessman and politician who is President-elect of the United States as well as chairman and president of The Trump Organization Play slideshow 1 of 64

The President of the European Commission revealed how close he was to reading three pages dedicated to a new female President of the United States, during a speech in Berlin on Wednesday evening. And in an astonishing interview European Commissioner for Economic and Financial Affairs, Taxation and Customs Pierre Moscovici refused to rule out putting the USA on its blacklist.