Yen Slumps Near 40-Year Low as Oil Prices Soar

The Japanese yen is locked in a stalemate near its weakest level in roughly 40 years, since December 1986. The currency has been battered by 'crisis dollar buying' fueled by escalating tensions in the Middle East and rising crude oil prices.

Oil prices have surged due to deteriorating conditions in Iran, prompting fears over supply disruptions. This has led to a strengthening of expectations that the Federal Reserve will raise interest rates, further pressuring the yen. The US dollar has climbed 0.9% against the yen for the week, its largest decline since Japan's biggest-ever currency intervention in May.

Japanese authorities have been warning about potential intervention, but their words have yet to translate into action. Finance Minister Satsuki Katayama reiterated that Japan will take 'appropriate and resolute action' whenever necessary, but market participants are waiting for more concrete measures.