Mr. Iinuma started his journalist career at the Weekly Toyo Keizai, Japan's third largest business magazine, as a reporter on financial economy and banking business. He expanded his coverage into such fields as business and industry, international trade, and administration reform. He also served as the editor-in-chief of the Weekly Toyo Keizai. From 1991-1994 Mr. Iinuma was the foreign bureau chief of Toyo Keizai's New York office.

In 1996-98, Mr. Iinuma headed the whole magazine division at Toyo Keizai. In 1999-2003, he was responsible for financial information and business development at that company. He is now the director of the Foreign Correspondent Club of Japan and writes on a freelance basis.

Mr. Iinuma has participated in many international media conferences including the EU-Japan Journalist Conference, US-Japan Media Dialogue and Harvard Conference on the International Information Revolution.

Mr. Iinuma was born in 1941 in Tokyo. He graduated from Keio University in 1964 with a degree in economics. He is married and has a daughter and a son.