A Chinese state-controlled news outlet appears to have accidentally published official instructions for how Chinese media outlets are to cover Russia’s invasion of Ukraine. The Washington Post first reported on Tuesday that the Chinese media outlet Horizon News posted the instructions on its Weibo, a Chinese alternative to Twitter. The since-deleted Weibo post stated Chinese outlets are not to make posts unfavorable to Russia or favorable to Western assessments of Russia’s actions in Ukraine. The instructions also appear to have called on Chinese media outlets to slow the speed at which users can share comments reacting to their posts, so...