11. Abdullah bin Abdul Aziz Al Saud
Abdullah bin Abdul Aziz Al Saud is the King of Saudi Arabia.
In addition to being one of few remaining absolute monarchs, Saudi Arabia's King Abdullah bin Abdul Aziz Al Saud is custodian of Islam's two holiest cities, one of which is in the midst of a transformation.
According to a 2001 report, Abdullah "has four wives, seven sons, and 15 daughters". The king has a personal fortune estimated at US$18 billion, making him the third wealthiest head of state in the world. In recent years his health condition has declined significantly and therefore igniting a power struggle over the succession to the throne.