Japanese Finance Minister Satsuki Katayama said Tuesday that the currency market is making "very speculative" moves, expressing readiness to take all possible steps, in a warning against the yen's depreciation against the U.S. dollar."Not only the crude oil futures market, but the foreign exchange market is becoming very speculative," Katayama said, as the dollar strengthened to near 160 yen in Tokyo trading, approaching a level seen as a possible trigger for currency intervention.Katayama's comments follow a strong alert on Monday by the country's top currency diplomat, who said Japan woul…READ FULL ARTICLE