A country whose ruler has unlimited power is called an autocracy.
Absolute monarchy (there are different types)
He is a dictator and has all the power.
...autocrat, or a dictator. Those who don't like him may call him other things as well
It is called an autocracy.
The ruler will be in power until she or he dies.
A ruler that has unlimited power and authority over his or her power is an absolute monarch.
An absolute ruler is a ruler that has unlimited power over their country.
unlimited.
Absolute monarchy
An autocratic ruler has complete and unchecked power over their country or territory. They have the authority to make decisions without consulting others and often suppress opposition or dissent. Their rule is characterized by centralized control and limited political freedom.
Absolute monarchy (there are different types)
An autocratic ruler has got unlimited power and usually does not allow, not even formally, that others than himself and a close follower group have a say in the government.
A ruler who has absolute power can be called a dictator or despot.
King
He is a dictator and has all the power.
dictator
A dictator.