As Donald Trump is sworn in today as the 45th President of the USA, there is huge uncertainty and concern in many different countries. Some fear that he will be far too influenced by President Putin, for example on easing sanctions on Russia, making a deal on Syria, and settling the Ukraine issue. Relations with Mexico are set for a downturn because of Trump’s plans to build a wall along the border and to deport illegal Mexican immigrants. Palestinians fear that he will pursue a pro-Israeli policy, while others hope for a more active US role in the Middle East than under Obama. Europe will want to see whether Trump’s negative remarks about NATO and the EU translate into a change in policy, and countries such as China and South Africa will wonder if Trump will impose tougher conditions on new trade deals. All over the world, people will watch and wait to see what kind of president we will have for at least the next four years.