The head of the UN nuclear agency said on Friday he was pushing for access to the roof of the Zaporizhzhia Nuclear Power Plant in Ukraine, following reports from Ukrainian officials that the Russians had planted explosives there. IAEA director general Rafael Mariano Grossi said his agency was making progress on access to Zaporizhzhia, but there had been “some limitations”. “It’s like a conversation and I’m pushing to get as much access as possible.”