On a leader-to-leader level, relationships between the U.S. and its most powerful allies are in tatters. That much is clear when a senior U.S. official declares "there's a special place in hell" for the prime minister of Canada. Canada!
The bigger picture: Antipathy for the U.S. in allied countries extends far beyond those leaders, and it's spiking under Trump. The U.S. has historically been the de facto leader within its strategic alliances, but an unpopular leader can quickly become a bully. The G7 summit showed the limits to that approach.