The fourth session of the Conference on the Establishment of a Middle East Zone Free of Nuclear Weapons and Other Weapons of Mass Destruction will be held from 13 to 17 November 2023 and the United Nation Headquarters. The venue for the Conferecne will be the Trusteeship Council Chamber on 13 November 2023 and Conference Room 11 on 14 to 17 November 2023.


The report of the fourth session of the Conference on the Establishment of a Middle East Zone Free of Nuclear Weapons and Other Weapons of Mass Destruction can be found here.


President of the fourth session

Ambassador Taher M. El-Sonni

Ambassador Taher El-Sonni was appointed as the Permanent Representative of Libya to the United Nations in January of 2020. 

Prior to this appointment, Mr. El-Sonni was the Senior Political Adviser to the President of the Presidential Council of Libya’s Government of National Accord beginning in 2016. 

Mr. El-Sonni was also a Political Adviser to the House of Representatives and a negotiating member during the Libyan Political Dialogue in 2015, having served as Minister Plenipotentiary and Adviser to the Minister for Foreign Affairs for diplomatic affairs and international relations in 2014. 

In addition to his national appointments, Mr. El-Sonni has over 20 years of diplomatic, political and managerial experience at the United Nations, the European Union and the League of Arab States.  In 2012, he was the project manager of a joint United Nations-European Union effort to establish the Arab League’s first crisis management centre. 

In 2011, Mr. El-Sonni was a member of the assessment team for the establishment of the United Nations Support Mission in Libya (UNSMIL), for the mission assessing that country’s post-conflict needs and for the United Nations Electoral Support Team.  During the same year, he participated in the coordination of humanitarian and relief activities. 

Mr. El-Sonni was Head of Operations for the United Nations Office in Gaza in 2009, Senior Operations Adviser at the United Nations Regional Office for Arab States in 2008, Head of the Programme Support Unit for development programmes and projects at the Organization’s Bureau for Arab States in 2003, and Head of the Programmes and Projects Support Unit at the United Nations Office in Libya in 1998. 

Mr. El-Sonni holds a bachelor’s degree in computer engineering from the University of Tripoli, Libya, and a Master of Science from the City University of New York. 

Information for Participants

Please refer to the "Documents" section to view the information notes for members to the Conference, observer States and invited international organizations; intergovernmental organizations; and, Information for non-governmental organizations.


Secretary-General of the Conference 

Mr. Xiaoyu Wang 
212 963-9440

Conference Focal Point

Ms. Tomisha Bino
929 248-9587

Participation of other observer entities & side events

Ms. Diane Barnes
+1 212 963 9169


Ms. Suzanne Oosterwijk
+1 917 367 2556