He is working as a representative of the United Nations.

He is an international businessman.

Our company is promoting the internationalization of our products.

Our company is planning to internationalize our products.

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.

I will take a plane from Narita International Airport.