> Don't know why I've been downvoted for answering the question. If the U.S. wanted to reply, that's simply the most likely legal mechanism. I don't know eithe

> Don't know why I've been downvoted for answering the question. If the U.S. wanted to reply, that's simply the most likely legal mechanism. I don't know either. People seem to automatically assume that a Western response means military intervention. That's just unrealistic. The US and Europe have significant diplomatic and economic carrots and sticks at their disposal. As you say, asset freezes and travel sanctions are the most likely as would economic sanctions.