He joined the demonstration while humming The Internationale.

He is an expert in international relations.

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.

The International Phonetic Alphabet is an essential tool for linguistic research.

The International Atomic Energy Agency is an international organization that promotes the peaceful use of nuclear energy.

He is interested in the study of international auxiliary languages.

The International Court of Justice is the main institution for resolving disputes under international law.

The International Monetary Fund is aiming for the stability of the world economy.

The International Football Federation is an organization that oversees soccer around the world.