Transatlantic alliance is likely to experience biggest shift for decades

An Italian band refused an invitation to perform at Donald Trump's inauguration as the 45th US president on Friday in Washington and some European representatives did not turn up. Meanwhile European TV viewers were left constantly shaking their heads as Trump delivered his inauguration speech.

These are signs of the mounting anxiety, distrust and even fear that ordinary Europeans have been feeling since the businessman won the US presidential election.

Without a doubt, Trump is expected to bring more uncertainties to Europe, mainly because his policies toward the European Union are still not clear, and his guiding principles are isolationism and nationalism, which he believes will make the United States great again.