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The Brussels mandarins sent a letter to the Republican leader immediately after his victory, extending their “sincere congratulations”. The letter expressed their hope Mr Trump would help foster a close relationship between America and the 28-country bloc. It read: “Dear Mr President-Elect. We extend our sincere congratulations on your election as the 45th President of the United States of America.

“Today it is more important than ever to strength transatlantic relations. Only by cooperating closely can the EU and the US continue to make a difference when dealing with unprecedented challenges, such as Da’esh, the threats to Ukraine’s sovereignty and territorial integrity, climate change and migration.” Speaking at the European Council today, President Donald Tusk said the result of the US election would bring with it "uncertainty of transatlantic relations". Mr Tusk said: "While respecting the democratic choice of the American people, we are aware of the new challenges the results bring, one of them is the uncertainty of transatlantic relations." Speaking hours after Mr Trump was announced as president, Mr Tusk said: "It is good to remember the strengths of the Western community. “The United States did more than anyone else to help build the European Union. “No one can take away our links or make us give up our shared memories and values such as freedom, solidarity and respect for the individual. “The events of the past month and today should be treated as a warning for all who belive in liberal democracy. "This means we should get our act together and bring back a sense of direction, bring back confidence and a sense of order."

GETTY Jean-Claude Juncker and Donald Trump have written a letter to Donald Trump including a TTIP plea

GETTY Donald Trump has been confirmed as the 45th president of the United States

The president of the European Council urged Europe and the US to work closely together. He said: “Europe and the US have no option but to co-operate as closely together.” “I would like to call for European and transatlantic unity, I do not believe any country can be great in isolation.” “We have to recognise that working together will take a great effort from both sides.” Mr Trump, who secured a stunning US election victory over his Democratic rival Hillary Clinton earlier today, was also invited to take part in a EU-US summit - with particular emphasis put on the controversial TTIP negotiations. Their letter continued: “Fortunately, the EU-US strategic partnership is broad and deep, from our joint efforts to enhance energy security and address climate change … to the negotiations on the Transatlantic Trade and Investment Partnership (TTIP).

US Election 2016: DONALD TRIUMPHS Wed, November 9, 2016 Donald Trump has been elected as the President of the United States of America Play slideshow Getty Images 1 of 115 Donald Trump as he makes his acceptance speech in New York following his victory to become he 45th president of the United States.

“We would take this opportunity to invite you all to visit Europe or an EU-US Summit at your earliest convenience. "This conversation would allow for us to chart the course of our relations for the next four years.”

EXPRESS Donald Trump stormed to victory over Hillary Clinton

Not everyone within the EU was as congratulatory or graceful in responding to Mr Trump’s victory. European Parliament President Martin Schulz said the presient elect would make life ”harder" for the European Union.

GETTY Democrats were stunned by Hillary Clinton's shocking defeat today