This week, leaders meet in Switzerland. It is called the World Economic Forum. Usually, countries work together. But this year, the US and Europe have problems.
President Trump wants to buy Greenland. Denmark and Greenland said no. This idea made many people surprised. It also made money markets move.
Trump will put high taxes on Europe. This is if he cannot buy Greenland. So, Europe thinks about its own taxes. They may tax many American goods. This trade fight makes countries less friendly.
The European Parliament might stop a trade deal. This deal was with the United States. This is a big step. It happens as leaders meet.
Stock markets are down a lot. This shows investors are worried. Gold prices went up. People buy gold when they are worried.
President Trump says Greenland is important for US safety. He is worried about China and Russia. This fight can affect the world's money.