Here's Why a Weak Yen Isn't Just Japan's Problem

Japan and the United States carried out their first joint currency intervention in 15 years to prop up the yen. It's the latest in a series of moves by Tokyo to boost its currency, which recently hit its weakest level in 40 years against the dollar. So why is the US getting involved, and will more action be necessary? Our Executive Editor for Asia Markets Paul Dobson joins Stephen Carroll to discuss.

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