This is a great honour for me to send my warmest greetings and congratulations on occasion of this remarkable holiday of Nowruz, the letter addressed to President Gurbanguly Berdimuhamedov from the Economic Cooperation Organization Secretary General Hadi Soleimanpour says. Cultural communality of the nations of the country members of the Economic Cooperation Organization reflected in the celebration of Nowruz supports the development of regional partnership for sustainable development and prosperity. Taking pleasant opportunity, let me extend wishes of strong health and success to Your Excellency and further progress and prosperity to people of Turkmenistan.