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Nikkei 225 opens down 1.99% at 18,171.66

Japan's benchmark Nikkei 225 opened down 1.99 percent at 18,171.66 points, while the broader Topix lost 2.02 percent to open at 1,405.98.

In Australia, the ASX 200 opened down 0.48% at 4977.20 points, while South Korea's Kospi opened up 0.16 percent at 1832.56.

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