The head of the International Atomic Energy Agency (IAEA), Rafael Grossi, has travelled to Ukraine to assess the situation surrounding the Russian-occupied Zaporizhzhya nuclear power plant. “What we are focussing on at the moment is the situation surrounding the cooling function of the power plant,” Grossi told journalists in Kiev on Tuesday ahead of a planned visit to the plant. Following the destruction of the Kakhovka dam downstream, the cooling water supply is very “fragile,” Grossi said. While on his scheduled Wednesday visit to the plant the IAEA boss wants to review the containment meas…