Esperanto is one of the most well-known international auxiliary languages.

He is an expert in international law.

The history of the International Communist Party had a significant impact on world political history.

He joined the demonstration while humming The Internationale.

He is an expert in international relations.

He is an excellent doctor.

He is a famous author, and his works are loved by many readers.

He always proactively suggests new ideas.

He works at a non-governmental organization.

Revisionism aims to change our understanding of past events.