The Atlantic got it right:

“Donald trump was right. He inherited a mess. In January 2017, American foreign policy was, if not in crisis, in big trouble. Strong forces were putting stress on the old global political order: the rise of China to a power with more than half the productive capacity of the United States (and defense spending to match); the partial recovery of a resentful Russia under a skilled and thuggish autocrat; the discrediting of Western elites by the financial crash of 2008, followed by roiling populist waves, of which Trump himself was part; a turbulent Middle East; economic dislocations worldwide.”