"We had ping pong diplomacy with China, and now we may soon engage in soccer diplomacy with Iran. Reports out of Tehran indicate that the US Soccer Federation has inquired about the possibility of holding a friendly with Iran sometime in October and November," writes Democracyarsenal.
America's next ambassador to Germany might come from the Board of Directors of the US Soccer Foundation... Germans are certainly going to support soccer diplomacy with Iran.
Atlantic Review has written about Soccer in German-American Relations. Also see these posts about the world cup in Germany to understand the importance of soccer to world peace: Germany's National Holiday and the "Summer's Tale" Documentary, U.S. Soccer Captain Praises Party Atmosphere in Germany and State Department Uses the World Cup to Improve U.S. Image.