Ukraine, Europe’s largest food exporter, is a major importer of ammonium nitrate, a key component of fertilizers. Last year, Ukraine imported 716,000 tons, at least seven times the volume of 2016, according to the State Statistics Service. Coming from Georgia, Bulgaria, Turkey and Romania, the chemical compound enters through a dozen ports – from Izmail to Mariupol. Inside the country, there are more than 600 warehouses for ammonium nitrate, Andriy Miselyuk, director of Dialogue Institute for Socio-Political Design, writes on his Facebook page.