International trade is fair at times and unfair at other times. It depends on the rules and regulations under which countries are trading. I'm referring to tariffs and similar trade barriers. These make it difficult for some countries to trade with a certain country. So when these barriers are in place, trade isn't very fair.
But the World Trade Organization (WTO) is constantly working to make trade more fair by settling disputes between trading partners and encouraging the removal of trade barriers. Trade would certainly be less fair without the work and efforts of the WTO.