NATO is the latest international organisation calling for UN inspectors to be allowed into Zaporizhzhia nuclear power plant, saying its seizure posed a serious threat to Ukraine and neighbouring countries. For two weeks there has been heavy shelling on and around the plant, with both sides blaming each other. Officials say Zaporizhzhia could be cut off from power. Moscow is redirecting electricity to Crimea. Ukraine says the situation is ‘approaching critical’. Unable to force the Russians from Europe's biggest nuclear power plant, Ukraine is preparing for the worst. At a supermarket car park emergency workers wearing yellow hazmat suits are practising cleaning drills in the event of radioactive contamination. The car park is also where Ukrainians fleeing Russian-occupied territories first arrive. There are queues of cars with people and full suitcases.