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Haruhiko Kuroda, governor of the Bank of Japan (BOJ), looks down at his notes during a news conference at the central bank's headquarters in Tokyo, Japan, on Friday, Jan. 29, 2016. Kuroda sprung another surprise on investors by adopting a negative interest-rate strategy to spur banks to lend in the face of a weakening economy. Photographer: Tomohiro Ohsumi/Bloomberg via Getty Images