The first 100 days of a president’s term—the “honeymoon period,” during which his power and influence are believed to be their greatest—are, whether rightly or wrongly, regarded as a predictor of a president’s success during the remainder of his term. Given the often bombastic tone of Candidate Trump’s campaign rhetoric, it was to be expected that the foreign powers against whom much of his vitriol was directed would seek to challenge the determination of President Trump to live up to his promises. And so it has been.