In barely 15 months, U.S. President Donald Trump has generated more global upheaval than most leaders do in a lifetime.

By eroding international norms, unleashing cascading crises and roiling world markets, he has emerged as a principal driver of global instability. And he still has 33 months left.

There is no modern precedent for what is now unfolding. A single leader — at the helm of the superpower that built and sustained the post-World War II international order — is dismantling it at speed, while openly mocking the very rules that once underpinned American power.

© The Japan Times