Prospects of interest rate rises are no longer just the U.S. story. Traders are now betting the Bank of Japan (BoJ) could tighten too as the resource-scarce nation faces inflation risks from the ongoing Iran war.

Traders see a roughly 69% chance of the BoJ raising its benchmark borrowing cost at the April 28 meeting, according to data tracked by Bloomberg. Action in options tied to U.S. interest rates shows traders expect the Fed to raise borrowing costs in the coming weeks.

BoJ’s policy meeting summary released Monday showed one member calling for a bigger rate hike in response to the conflict in the Middle East and its inflationary impact on Japanese society. Comments also noted that any move would factor in incoming economic data and anecdotal signals from the market.

The Fed’s tightening is a well-known headwind for risk assets, including bitcoin. The Bank of Japan can be just as impactful. Years of ultra-low rates encouraged traders to borrow in yen and invest in higher-yielding markets (the so-called carry trade), keeping borrowing costs suppressed globally and greasing rallies in risk assets.

So, a shift toward tighter policy in Tokyo could reverse these flows, sending ripples across markets and potentially deepening the crypto bear market. The BoJ has already raised its interest rate to 0.75% from -0.1% over the past two years while simultaneously ending its massive asset purchase program. Yet, rates in Japan remain significantly lower than the 3.5% seen in the U.S.