Introduction: As we know, when people play the dominoes, in order to push all dominoes down, they do not need to push every one, due to one part down, all of others will be pushed down because they are connected with each other. This phenomenon called the domino effect. This effect is very common in things that are tied tightly together in daily life. With the development of technology and the range of human activities become enlarge, there is a link like the domino forms between climate change, energy problem, food security and water. In this system, if any one fail, it will have the potential that cause a unrest in a state even many states. Be different from climate change or energy problem that have attracted much attention, water crisis is a new problem that plays a more and more important role in this relationship. As said by Ismail Serageldin, the former VP of the World Bank,“If the wars of the twentieth century were fought over oil, the wars of the next century will be fought over water”. Why and how water becomes such noticeable now? To answer this question, analysing the whole situation firstly is necessary. According to the global status of water resources, there is a report released by the National Intelligence Council said that "North Africa, the Middle East and South Asia 'will face major challenges coping with water problems ', particularly as a result of population growth and increased economic demand"(Clinton warns of instability over water). Be different from energy and other resources, water and food the top two important and necessary goods because they are related to humans ' survival directly. In a sense, water plays a more significant role than food because water has more closely connection with other things, and, if there is no water, food also cannot be produced. But water resource is not unlimited. Even though 70% of the surface of the earth is covered by water, however, the fresh water resource
Cited: 1.Lester R. Brown,