Some people think sports occasions are essential in easing international tensions and releasing patriotic emotions. I agree with part of this opinion, to my point, I prefer using 'probable' to 'essential'.
As we know, sportsmenship has no boundary among the countries all over the world. Every aspiring athelet is focus on improving their skills in order to make their sports dream come true. Without considering of politics, religion, and race, people just enjoy in sports! Also, countries which are involved in the sports occasions are eager to get their best achievements with the equal standerd in a harmonious environment. As the result, people have precious chances to realize each other peacefully. I do believe that situaion is all people and countries' hope with nature.
About the successful example, here is it. A famous diplomacy called 'PingPang diplomacy', which was proposed by ex-president and most brilliant leader of China Mao Ze Dong, started a new age of diplomacy relationship between China and United States. Chinese players of table tennis went to visit America for teaching and communicating skills with American players. In fact, that's really a remarkable turning in histories of China and America. Despite two countries still had a lot of different opionions inevitably, Americans started to read new china again with throwing the old minds.
On the other hand, some opponents claim that sports occasions will cause new arguments even voilences or riots because of over releasing patriotic emotions for being winner. Honestly, that's definitely a problem. However, is there any diplomacy could guarantee of resolving all the international problems without any negative impact? I don't think so, please let sports diplomacy be a option of easing international tensions. At least, it's better and safer than military intervention or other forced way.
In conclusion, every coin has two sides, building sports occasions for easing misunderstanding and strengthening communication is really a enforceable method.