A more thorough explanation:

Definition: A diplomatic pouch is a bag that contains official correspondence, documents, or articles that are meant only for official communications between a nation and its missions, consular posts, or delegations. It can also refer to the contents of the bag. It is also known as a diplomatic bag or valise diplomatique.

• A diplomatic pouch was sent from the embassy in Paris to the consulate in New York.
• The ambassador carried a diplomatic bag with important documents to the meeting.

These examples illustrate how a diplomatic pouch is used to transport official documents and articles between a nation and its missions, consular posts, or delegations. The pouch is considered to be inviolable, meaning it cannot be searched or seized by authorities of the country it is passing through. This ensures the confidentiality and security of the information being transported.