Among the clearest casualties of China's devaluation is the Bank of Japan. The chances were never high that Governor Haruhiko Kuroda was going to be able to unwind his institution's aggressive monetary experiment anytime soon. But the odds are now lower than even skeptics would have previously believed.
The real question, though, is what China's move means more broadly for Abenomics. A sharply devalued yen, after all, is the core of Prime Minister Shinzo Abe's gambit to end Japan's 25-year funk. Abenomics is said to have three parts, but monetary easing has really been the only one. Fiscal-expansion was neutered by last year's sales-tax hike, while structural reform has arrived only in a brief flurry, not the avalanche needed to enliven aging Japan and get companies to raise wages.