Often implies a grand, sometimes ruthless or unscrupulous ambition, especially for power or conquest. Compare 野心 (やしん), which can be more neutral or personal.
See also: 野心
He harbors ambitions of world domination.
When I was young, I had aspirations to become a politician.
He harbored an ambition of world conquest.
He finally realized his ambition.
The police thwarted the criminal's ambition.
The president's ambition finally came to light.
志 refers to a noble personal aspiration or life goal, in contrast to 野望, which suggests an audacious and often self-serving ambition.
野望 implies a strong, often selfish or grandiose ambition, whereas 抱負 is a positive, earnest hope or plan.
Composed of 野 (field, wild) and 望 (hope, desire), suggesting a wild or untamed aspiration. The exact historical derivation is uncertain, but the compound has long been used to denote ambitious designs.