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Asian shares falter, Aussie dollar volatile after rate cut

Asian stock markets retreated on Tuesday and the Australian dollar briefly fell after the central bank cut interest rates for the second time in four months as the region's growth falters in the face of slowing demand from China. The Reserve Bank of Australia cut its cash rate a quarter point to an all-time low of 2.0 percent to push the stubbornly strong local dollar lower, in line with market and analysts'…