An attempted attack near the London studios of Iran International has heightened concerns over what the broadcaster says is a growing campaign of intimidation targeting its staff. A suspicious vehicle was denied entry at the main entrance of its site on the evening of April 15. Shortly afterward, incendiary devices were thrown into the car park of a neighboring building just meters from its studios. “Our security team responded immediately, and the police and fire brigade arrived shortly afterwards. We are grateful to them for their swift response,” Iran International’s editorial board said in a statement. London’s Metropolitan Police said...