The BBC filed a complaint Wednesday to the United Nations over Iran freezing the assets of more than 150 people associated with its Persian service, calling the Islamic Republic’s actions “a deprivation of human rights.” The British broadcaster described Iran’s actions as part of a “criminal investigation” into its staff, former employees and contributors over allegations of them fomenting a “conspiracy against national security” in Iran and abroad. Those swept up in the investigation include Iranian dual nationals from Australia, Austria, Canada, France, Germany, Britain and the United States. Iran’s mission at the U.N. did not respond to a request...