He was Permanent Representative and Ambassador Extraordinary and Plenipotentiary at the Permanent Mission of Japan to the United Nations in New York .
Since 2011 , Takasu has taught at Ritsumeikan University in Kyoto .
Takasu was Takasu   and Ambassador Extraordinary and Plenipotentiary at the Permanent Mission of Japan to the United Nations in New York .
Since 2011 , Takasu has taught at Ritsumeikan University in Kyoto .