Japanese equities showed little movement at the start of trading on Wednesday, as escalating concerns over inflation extended a selloff in U.S. government bonds and pushed yields to multi-year highs.
The Nikkei 225 opened marginally lower with a negative bias at 60,567.27.
On the geopolitical front, US President Donald Trump threatened to resume strikes on Iran within days as part of efforts to secure a deal to end the war, while NATO is discussing potential assistance for ships transiting the Strait of Hormuz if the strategic waterway remains closed beyond early July.
Finance Minister Satsuki Katayama told reporters in Paris on Tuesday that her G-7 counterparts understand Japan's position, pledging to take bold action as necessary to support the yen.
Separately, Bank of Japan Governor Kazuo Ueda reiterated at the same press conference that he will continue conducting monetary policy aimed at achieving stable inflation while closely monitoring upside risks.