In a very troubling development, South Korean President Yoon declared martial law without apparent justification. South Korea's Constitution permits a declaration of martial law "to cope with a military necessity or to maintain the public safety," but Yoon only made vague references to "anti-state forces" and support for North Korea among the opposition party, which controls the National Assembly, when he made the announcement. Yoon is deeply unpopular and neck-deep in corruption allegations, so he could be preempting a possible uprising, like what happened in 2016 when Park Geun-hye was forced to resign. The head of his own party has apparently come out against the declaration.

Hard to parse the exact implications at this point, but nothing good will come of this. It's also hard not to ask "what if" with Trump returning to power next month ...