Japan's government has expressed alarm over recent foreign exchange fluctuations, particularly as the yen has fallen to a five-month low. This decline followed comments from the central bank chief indicating a potential delay in interest rate hikes, which has raised concerns about currency speculation. Top finance officials have stated that they are prepared to intervene in the foreign exchange market if speculative activities are deemed excessive. The situation reflects growing worries about the impact of a weaker yen on inflation and economic stability.