China’s government issued new rules Tuesday that further tighten controls over the country’s heavily censored online news services, The Wall Street Journal reports. The new regulations, which go into effect June 1, require the top editor of domestic online news services be a Chinese citizen and that any cooperation with a foreign entity be submitted to a security review. The rules are directed at services based in China and don’t appear to affect foreign news organizations with headquarters outside the country. Online news sites should “promote the formation of a positive, healthy, upright and virtuous internet culture, and protect the national and public interest,” according to the regulations. The rules apply to news websites, blogs, live-streaming video sites, mobile messaging services and other platforms that produce news related to politics, the economy, the military, foreign affairs and other topics of public interest.