four challenges facing the GCC

What are the four challenges facing the GCC and which one do you think is the most important one and why?

There are four major challenges facing the GCC and those are:
(1) The demographic (population) challenge
(2) The economic challenge
(3) The political challenge
(4) The security challenge

Each challenge is important as the other in a way and I'm going to explain each one of them and how they are important.
First I'm going to explain what we mean by demographic challenge. Demographics are the quantifiable statistics of a given population Demographics is also used to identify the study of quantifiable subsets within a given population which characterize that population at a specific point in time. We can also say that demographics are gender, age, ethnicity, knowledge of languages, disabilities, mobility, home ownership, employment status, and even location. The GCC are facing a problem with their population because expatriates constitute a third of their population. For example, in Kuwait the population is about 3 million and only one third is Kuwaiti's.
Second the economic challenge. Economy consists of the production, distribution or trade, and consumption of limited goods and services by different agents in a given geographical location. Countries of the GCC depend on oil as a center of their economy as Oil constitutes biggest GDP portion in all GCC countries. They also depend on other natural resources such as gas.
Third the political challenge. In the GCC citizens take part in the country's politics and in the decision-making process of society and the state. In the GCC there are 3 branches that take part in the politics and those are the executive branch, the legislative branch and the judicial branch. The constitute is the main source that sets the rules and laws of the country.
Forth is the security challenge. There are four parts covering this challenge: Defense security, Food security, Water security and energy security. In defense, GCC countries rely on foreign countries to take over their security such as France, Britain and the USA. In the food security, countries of the GCC export 90% of their food from other countries. Water in the GCC is mostly from desalination because there are no rivers in the area. Finally, energy is produced from gas and fuel which are the only sources available.
In my opinion all of them are important because they all must be solved so that we won't face a problem in the future. But the security challenge is the most difficult one because the GCC countries depend on natural sources that are not renewable. They use their natural sources as the first source of income and that’s what other countries depend on because they expect to get oil in return on doing their services for them. In ten years or so these resources may finish and they will face a huge problem because they won't be able to find a new source in a short period of time. Because of this they should try to find other sources that are renewable.