Hungarian President Janos Ader (C) attends the release ceremony of a commemorative postal stamp to mark the Budapest Water Summit in Budapest, capital of Hungary, on Nov. 21, 2016. Janos Ader sponsored the issue of the commemorative postal stamp on Monday, to mark the Budapest Water Summit of which he is chief patron, set to begin in a week's time. The stamp, issued as a commemorative block with a face value of 400 forints (1.37 U.S. dollars) was designed by artist Anita Laczko and portrays a unique bird shaped from droplets of water rising above a water surface. (Xinhua/Attila Volgyi)