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 always proactively suggests new ideas.

In our company, we always adhere to the principle of safety first.

The agenda of the Security Council is an important issue related to national security and defense.

I will take a plane from Narita International Airport.

The International System of Units is the standard measurement system used by scientists all over the world.