Write an engaging introduction that highlights the political tensions currently affecting the US Men’s National Soccer Team as they head into the CONCACAF Nations League semi-finals. Provide a brief overview of the recent roster changes and the statements made by key figures, such as Mauricio Pochettino, on the intersection of politics and sports. Use this context to introduce the broader topic of “Sports Diplomacy and Its Role in International Relations.” Delve into examples from history, like the “Ping-Pong Diplomacy,” to illustrate how athletic events have been leveraged to ease political tensions. Conclude by encouraging readers to reflect on the impact of current political dynamics on international sports competitions today.