William Pesek is an award-winning Tokyo-based journalist and author of "Japanization: What the World Can Learn from Japan's Lost Decades."
Bank of Japan Gov. Kazuo Ueda is limbering up for an intensely challenging year. The conventional wisdom is that all the ingredients are there for the central bank to exit 20-plus years of ultraloose monetary policy. It seems to be a question of when, not if.
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