KYIV, Ukraine (AP) — Ukraine’s president has unveiled a new nuclear waste repository at Chernobyl, the site of the world’s worst nuclear disaster that unfolded exactly 35 years ago. President Volodymyr Zelenskyy visited Chernobyl on Monday together with Rafael Mariano Grossi, director general of the International Atomic Energy Agency, and vowed to “transform the exclusion zone, as Chernobyl is referred to, into a revival zone.” The Ukrainian authorities decided to use the deserted exclusion zone around the Chernobyl power plant to build a repository where Ukraine could store its nuclear waste for the next 100 years.