It was distressing enough to learn that many of the senior State Department staff are fleeing the upcoming foreign policy disaster. Now, it appears that an undisciplined, inexperienced, and quite possibly deluded individual is threatening relations with foreign governments. Apparently without a clue that his statements are demeaning to Mexico whose president has steadfastly refused to pay for a wall, Trump tweeted "If Mexico is unwilling to pay for the badly needed wall, then it would be better to cancel the upcoming meeting." That of course left the Mexican leader no choice but to cancel the meeting. This is a very bad sign for the future of diplomacy which requires a deft hand and an understanding of people, culture, and history.