The Russian Foreign Ministry said on July 3 that it had summoned Romanian Ambassador Cristian Istrate and informed him that a diplomat from the Romanian Embassy in Moscow had been declared persona non grata. The ministry described the move as "a response" to Romania's decision in late May to declare a Russian diplomat in Bucharest persona non grata. On May 24, Romanian authorities announced the arrest of a Romanian man suspected of spying for Moscow since 2022, adding that a diplomat at the Russian Embassy had been declared persona non grata for activities in breach of the Vienna Convention on diplomatic relations. To read the original story by RFE/RL's Russian Service, click here.