Japan warned it is ready to take decisive action on currency volatility as authorities intensify monitoring of foreign exchange markets.Summary:Japan’s finance minister warned that FX markets are “extremely volatile.”Tokyo declined to comment on specific currency levels.Authorities said they are prepared to take “decisive steps” if needed.The comments follow Japan–South Korea talks over the weekend expressing concern about currency weakness.Policymakers are closely monitoring foreign exchange markets.Intervention risk may increase if volatility accelerates.Japan’s finance minister has reiterated that authorities stand ready to act against excessive currency volatility, underscoring Tokyo’s growing concern about instability in foreign exchange markets.Speaking to reporters, Satsuki Katayama declined to comment on specific exchange-rate levels but acknowledged that financial markets, including foreign exchange, have become highly volatile.Katayama said the government remains prepared to respond if market moves become disorderly.“We are prepared to take decisive steps on foreign exchange if necessary,” she said.The comments come shortly after Japan and South Korea jointly expressed concern over sharp declines in their currencies during talks over the weekend. At that meeting, Katayama and South Korea’s finance minister warned that both governments were closely monitoring currency markets and were prepared to act against excessive volatility.The renewed remarks from Tokyo reinforce that message and highlight the authorities’ heightened sensitivity to recent moves in the yen.The Japanese currency has come under pressure in recent weeks amid strong demand for the U.S. dollar linked to global geopolitical tensions and rising energy prices. The yen’s weakness has pushed it toward levels that market participants often associate with potential intervention risk from Japanese authorities.Japanese policymakers have historically avoided commenting directly on specific currency levels, instead emphasising concerns about rapid or disorderly movements.Such language is widely interpreted by markets as a signal that officials are becoming increasingly uncomfortable with recent exchange-rate dynamics.While Katayama stopped short of signalling immediate action, the reference to “decisive steps” echoes language used by Japanese officials ahead of past interventions.Authorities in Tokyo have intervened in currency markets several times in recent decades when sharp yen depreciation threatened economic stability or triggered excessive volatility.For now, the government appears to be focusing on verbal warnings while monitoring developments in global financial markets.Investors will be watching closely for any signs that Japan could move beyond rhetoric and intervene directly if currency moves accelerate. This article was written by Eamonn Sheridan at investinglive.com.