noun
failed state
A political term for a state that has lost effective control over its territory and basic functions.
内戦が続き、その国は破綻国家と化した。
The civil war continued, and the country turned into a failed state.
Compound of 破綻 (はたん, 'collapse, failure') and 国家 (こっか, 'state, nation'). A direct translation of the English term 'failed state'.