Mari Yamaguchi is a seasoned journalist with extensive experience in news reporting, research, and writing, primarily in Japan and other parts of Asia. Her work focuses on critical topics such as defense, politics, and nuclear safety, including coverage of the Fukushima Dai-ichi nuclear disaster and its aftermath following the March 2011 earthquake and tsunami. She has also reported on Japanese diplomacy, human rights, history, and social issues.

As a member of the Associated Press, Mari was part of the award-winning team that covered the 2011 triple disasters. Her dedication to journalism and her ability to tackle complex and sensitive issues have made her a respected figure in the field.