Japan appears to be on the cusp of a full-blown currency and bond market crisis. Although the Japanese authorities spent more than $70 billion in May to prop up the yen, the currency has slumped to a 40-year low and is estimated to be at least 15 percent undervalued against the US dollar. Meanwhile, Japanese long-term bond yields have surged to multidecade highs following the end of the Bank of Japan’s yield-curve-control policy.

Desmond Lachman expects the country's currency and debt woes to draw attention to others on an unsustainable fiscal path.

Japan’s currency and bond market woes are a result of its unsustainable public debt. The other Western nations must pay heed

Japan appears to be on the cusp of a full-blown currency and bond market crisis. Although the Japanese authorities spent more than $70 billion in May to prop up the yen, the…