Mari Saito is an investigative reporter with an international remit, covering everything from wars to popular protests. Most recently Mari produced a series of investigations about war crimes in Bucha, the infiltration of Ukraine’s security services by Russia, and the discovery of thousands of pages of Russian military documents in a bunker in eastern Ukraine. Mari, who is originally from Tokyo, also uncovered corruption in the run-up to Japan’s Olympic Games and has worked on a series of investigations about asylum seekers in Japan and labor abuses by automakers.