Japan is prepared to take all necessary steps to counter excessive volatility in the currency market, Finance Minister Shunichi Suzuki said Tuesday, the latest in a series of verbal warnings as the yen continued to tumble, dropping past 154 against the U.S. dollar to a 34-year low.Suzuki said the government is keeping close tabs on developments in the currency market but declined to say whether the yen's recent fall was rapid and volatile, an assessment that could trigger another market intervention to slow its decline.Japanese authorities have repeatedly warned that they would act if neede…READ FULL ARTICLE