Ezra (2 Esdras) 1

Ezra (2 Esdras) 1:2

"Thus said Cyrus king of the Persians, The Lord God of heaven has given me all the kingdoms of the earth, and he has given me a charge to build him a house in Jerusalem that is in Judea."
Did Cyrus rule the entire earth?

When did Cyrus rule the entire earth? He didn't, but ANE kings had the propensity to use hyperbole. On the other hand, the word "earth" here is 'erets which is a vague term that means any area of land.