How Far Is Too Far?

Where I wonder, is the point when, just maybe, it might be advisable for the POTUS to stop trolling world leaders like a kid living in his parents’ basement?

The only way we keep liberty from degenerating into license is though the cultivation of virtue. But without self-restraint, without a sense of the dignity of one’s office, there can be no virtue.

What inspires these thoughts is a recent tweet from POTUS.