Rafael Grossi added: "Attacking nuclear sites is like playing with fire" MOSCOW, May 31. /TASS/. International Atomic Energy Agency (IAEA) Director General Rafael Grossi expressed his concerns in connection with the drone attack against the turbine building of the Zaporozhye Nuclear Power Plant (ZNPP), the agency said on X. "DG Rafael Grossi expresses serious concern about the reported incident which would endanger both the 7 indispensable pillars for ensuring nuclear safety during the conflict