English as the global language

Today it's common sense that English has the most largest influential language in the world. It is required a high English skill to get a better job. Naturally more students desire to study abroad in America. English is becoming already a necessary language instead of the past "cool" language. So I think it's assured in the near future English will regard as the global language. However, not everyone agree with this statement. Some have some doubts about it.
Opponents of English as the global language claim that the share of the world's population that speaks English as a native language is falling. Yet still it is spoken as a native language in 54 countries in 192 countries. In other words, more than 500 million people speak it. Of course to become the global language, the population of speaking that language is important key but I suppose more important thing is its influence. Even if one language is spoken by the most largest population, it makes nothing if it's spoken only in one isolated big country. The matter is how large share and distribution it has. So I guess if the number of the native English speaker is decreasing, it won't destroy the common thought that English as a global language has taken root. Moreover, it might be covered with more developed education of English.
Opponents also maintain that Chinese will take place instead of English in the future. When thinking about population, China has the largest population,1.3 billion. It's overwhelmingly more than the number of native English speakers. In addition to population, China is showing a remarkable development in economic or scientific technique. So in order to get the business opportunity more people start to learn Chinese and think about fig future of China. Economical growth helps needs of its language bigger and bigger. So it couldn't be denied the possibility of Chinise as a global language, however, it has still problem. Firstly, Chinese has really a lots of dialects and it's said even if same Chinese sometimes it's difficult to understand the different dialects at all. Secondly, the country which has the most strongest influence economically, politically, military and culturally is still America. And I think it's difficult for the other country to go over these every genres.
In this way, the arguments about which language should be the global language is still in debatable. But I'm sure a condition of global language is its influence to the world. It means that country has to be top and attract people all the time. And so far it's probably United Stats.