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Story summary
- Rafael Mariano Grossi, director-general of the International Atomic Energy Agency (IAEA), led a team to the Zaporizhzhia plant in Ukraine in September 2022 after Russia seized the facility.
- The mission sought access to nuclear facilities amid fears of a radioactive disaster.
- Grossi faced risks including gunfire in the conflict zone.
- Experts warn of two types of nuclear proliferation: vertical and horizontal.
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