The International Telecommunication Union (ITU) considers itself the world’s oldest continually operating international organisation and dates its birth to the founding of the International Telegraph Convention in 1865. It is a specialised agency of the UN and today it globally regulates the field of telecommunications. Among other things, the ITU sets international telecommunications standards, and the ITU members from the private sector and universities are involved in development of these standards. The Development Sector of the ITU also helps to increase members’ capacities in cyber security and e-state applications. In 2015, the Secretary General of the ITU Houlin Zhao visited Tallinn. In representing Estonian interests in the ITU, the Permanent Representation is cooperating with the Ministry of Economic Affairs and Communications, and the Technical Regulation Authority.