From the Document: "Russian military forces have seized two of Ukraine's nuclear power plants as part of the invasion that began on February 24, 2022. The four-unit Chernobyl nuclear plant, whose last operating reactor permanently closed in 2000, was occupied shortly after the start of the invasion. Russian forces then attacked and captured the Zaporizhzhia nuclear plant, with six operational reactors, on March 4, 2022. The nuclear plant attacks have caused widespread concern about the potential for radioactive releases and potential war crimes. Congress may wish to consider what actions the U.S. government could take to support the safety and security of nuclear facilities in Ukraine."
CRS Insight, IN11883
Congressional Research Service: https://crsreports.congress.gov/