A European Union employee from Sweden has gone on trial in Tehran on espionage charges, EU officials and the Swedish Foreign Ministry said on Sunday. Johan Floderus, 33, was arrested at Tehran’s airport in April 2022 after taking a private trip to the country, according to Iranian reports. He has since been held in Iran’s Evin prison, alongside many Iranian dissidents and protesters. A top Swedish diplomat was present at the courthouse when proceedings began on Saturday but was denied permission to take part, according to Swedish Foreign Minister Tobias Billström, who said his country has requ…