 Complete the following phrase:  Switzerland has yet to win a major international trophy, and the best result they have achieved thus far is the quarter-finals of the World Cup on three occasions, in 1934, 1938 and 1954, and they earned a silver medal at the 1924 Olympic Games, held in Paris, where they lost 30 to Uruguay in the final. The Swiss youth teams have been more successful; as the U-17 squad won the 2002 UEFA U-17 Euro and the 2009 FIFA U-17 World Cup, while the U-21 squad qualified for the semi-finals of the 2002 UEFA U-21 Euro, and were finalists of the 