It is still unclear whether Twitter intends to act on requests for Trump’s account to be suspended. Twitter declined to comment on the matter, citing a company policy not to discuss individual accounts “for privacy and security reasons.”

Nor, for that matter, is it clear that Trump’s tweets actually constitute a terms-of-service violation. While Trump does appear to be sending a clear warning to North Korea, the stakes aren’t limited to a legalistic reading of Twitter’s policies. The company may need to balance Trump’s tweets against its own commitment to free expression and also weigh the public interest value of Trump’s unfiltered musings. If Ukraine and Russia can be said to engage in public diplomacy on Twitter when they battle each other with memes, then it could also arguably be a form of diplomacy for Trump to seek to deter North Korea with tweets, alarming as those tweets may be.