Muscat (AFP) – An 85-year-old Iranian-American arrested in Tehran more than six years ago who is seeking urgent medical treatment has landed in Abu Dhabi, the State Department said Wednesday, with the United States pressing for the release of three other citizens. Baquer Namazi, a former UNICEF official, was detained in February 2016 when he travelled to Iran to press for the release of his son Siamak, who had been arrested in October of the previous year. Namazi “is now in Abu Dhabi after departing Iran for Muscat; he has been reunited with his family and will soon receive urgently needed med…