Japan's real effective exchange rate fell to 65.93 in May, less than half its 1986 level, making imports costlier despite cheaper tourism.

The Japanese yen has plunged to its lowest level in 40 years against the US dollar, raising concerns about potential government intervention and global economic repercussions.

Japan's real effective exchange rate fell to 65.93 in May, less than half its 1986 level, making imports costlier despite cheaper tourism.