third country
Refers to a country other than the two directly involved in a matter, often used in diplomatic, legal, or trade contexts.
A third country stepped in to mediate the dispute.
This treaty also applies to third countries.
The refugee fled to a third country and sought protection.
The cargo was transported via a third country.
Trade with third countries increased due to the sanctions.
The dispute between the two countries was resolved through mediation by a third country.