Modifiers matching treaty:

• multinational,
• nonnative,
• new,
• international,
• global,
• multilateral,
• political,
• key,
• critical,
• important,
• european,
• regional,
• major,
• older,
• formal,
• complex,

Simple categories matching multinational:

• organisation,
• endeavor,
• bloc,
• organization,
• arrangement,
• unit,
• religion,
• institution,
• body,
• agency,
• entity,
• structure,
• treaty,
• situation,
• corporation,
• coalition,
• company,
• state,
• force,