Which nations win these coveted regional seats will likely be determined by several factors. For instance, countries with the best-equipped and most professional militaries are likely to have a greater chance. The five PSC chairs will be expected to contribute the bulk of the peacekeeping forces, provide financing and logistical support and complement smaller nations' militaries with greater technology and equipment.

Another key consideration will be experience and reputation in previous peacekeeping missions. Countries in each region will also be evaluating potential contenders on the likelihood they would pose a threat in the future. Perhaps the most extreme example of this political dynamic will be seen in West Africa between Nigeria and Senegal.

Though it has experience in peacekeeping missions, the Nigerian military's reputation was tarnished during the Liberian civil war due to accusations that the country's troops looted the tiny West African state while acting as leader of a peacekeeping mission called the Economic Community of West African States Monitoring Group.

Smaller West African states worried about Nigerian domination may choose Senegal as regional chair to act as a counterbalancing force. In other regions such as East Africa, this issue will be less pronounced since countries like Kenya and Tanzania are equal in population and power-projection capabilities.