Ultimatum From Onsus

The book (Ultimatum From Onsus): They came in 2035 to prepare planet Earth for eventual colonization by their own citizens. These small beings had selected Earth many thousands of years before to become their new home when planet Onsus burned out. They came in their huge sophisticated spacecraft and set up a base in Australias outback. They introduced a new culture to the whole world and insisted upon its adoption despite tremendous resistance from the human inhabitants. The populace feared them. The warmongers attacked them but they resisted all attempts to remove them. In the end they forcibly imposed their will upon the citizens of the world and the whole world changed forever.