Letter dated 15 September from the Permanent Representative of Hungary to the United Nations addressed to the President of the Security Council (S/21763) Letter dated 15 September from the Permanent Representative of Spain to the United Nations addressed to the President of the Security Council (5121764) Letter dated 15 September from the Permanent Representative of the Netherlands to the United Nations addressed to the President of the Security Council (S/21765) Letter dated 15 September from the Permanent Representative of Greece to the United Nations addressed to the President of the Security Council (S/21766) Letter dated 15 September from the Permanent Representative of Ireland to the United Nations addressed to the President of the Security Council (S/21767) Letter dated 15 September from the Permanent Representative of Sweden to the United Nations addressed to the President of the Security Council (S/21768) Letter dated 15 September from the Permanent Representative of Norway to the United Nations addressed to the President of the Security Council (S/21769) Letter dated 15 September from the Permanent Representative Of Portugal to the United Nations addressed to the President of the Security Council (5121770) Letter dated 15 September from the Permanent Representative of Australia to the United Nations addressed to the President of the Security Council (S/21771) Letter dated 15 September from the Permanent Representative of Luxembourg to the United Nations addressed to the President of the Security Council (S/21773) 
**Analysis**
The text appears to be a collection of letters from various countries' permanent representatives to the United Nations addressed to the President of the Security Council. The letters are dated September 15th, suggesting that they may be related to a specific event or issue. The brevity and lack of specific details in the text make it difficult to pinpoint a specific category, but given the context of the United Nations, it is likely that the letters relate to international relations, global governance, or a specific issue of international concern.

**Category**
International relations