TOKYO — Yukio Okamoto, a diplomatic expert who advised multiple Japanese prime ministers, two in an official capacity, on issues ranging from the return of a U.S. military base in Okinawa to Iraq reconstruction, died in late April. He was 74.
Okamoto had contracted the coronavirus, a Japanese government source said.
A graduate of Hitotsubashi University, Okamoto joined Japan’s Foreign Affairs Ministry in 1968. The career diplomat served in many critical posts including director of the ministry’s National Security Affairs Division and the First North America Division.
After retiring from the ministry in 1991, he founded foreign policy consultancy Okamoto