Roman Rozhavsky

The provided news articles focus on Gerald Brown, a former US Air Force officer accused of training Chinese military pilots, and Yaoning "Mike" Sun, a California man sentenced for acting as an illegal agent for the Chinese government. Neither article mentions anyone named Roman Rozhavsky. Therefore, it is impossible to provide any information about Roman Rozhavsky based on the given context. The articles highlight concerns about potential espionage and foreign influence operations within the United States, specifically involving individuals with ties to the Chinese government. The cases demonstrate the US Justice Department's efforts to prosecute individuals accused of betraying national security or engaging in illegal foreign lobbying activities.