Global markets on edge as policymakers flex muscles

Fresh government intervention to support China's jittery markets and bets on a more dovish stance from central bankers provided limited respite from a stock market sell-off on Wednesday as oil resumed its fall. Benchmark indexes in Paris, Frankfurt and Milan were broadly flat and outperforming a slightly negative European market at 0842 GMT. "Trader and investor nerves are a bit fragile at the moment...People are just unsure at the moment of whether this is a good buying opportunity or not," sai