US and Japan Team Up to Prop Up Yen

The US and Japan jointly intervened in the currency market to stabilize the yen, which had reached a 40-year low against the dollar. This is only the sixth time Japanese authorities have intervened in the foreign exchange market in the past five years, but it's the first time they've done so with the help of another country.

The weak yen was causing problems for both Japan and America, as it made imports more expensive and created a risk that other countries would engage in competitive currency devaluations. Global investors had started to worry about the Bank of Japan's slow pace of interest rate hikes, leading them to dump their yen and send its value plummeting.

The US Treasury Department gave Japan access to its Foreign and International Monetary Authorities (FIMA) Repo Facility, which will allow Japanese authorities to borrow dollars without having to sell US Treasuries. This move gives the Bank of Japan more breathing room to consider raising interest rates without worrying about the yen's weakness.

The value of the yen is likely to remain uncertain for now, as it requires several factors to align in order to strengthen further. These include lower oil prices, an end to the conflict in the Middle East, and higher Japanese interest rates.