You might be thinking of super intelligence which we cannot control by default as it would outsmart any control systems. Note, that is not to say it would not c

You might be thinking of super intelligence which we cannot control by default as it would outsmart any control systems. Note, that is not to say it would not cooperate - it could very well choose to follow the parameters given to it. For non super intelligences there are plenty of example of intelligences controlling other intelligences through various means: force, power structures, economic system, etc.