Japan's prime minister on Monday urged Washington to dispel concerns that a decision by Joe Biden to block Nippon Steel's takeover of US Steel could impact future investments.

The US president's announcement last week cited a strategic need to protect domestic industry, a move that drew sharp criticism from both companies and Tokyo.

A US government panel had failed to reach consensus on whether the $14.9 billion acquisition threatened national security, shifting the decision to Biden in the waning days of his presidency.

Prime Minister Shigeru Ishiba said the veteran Democrat's decision had sparked worries over future Japanese investments in the world's largest economy.

"It is unfortunately true that there are concerns being raised within Japan's industrial world over future Japan-US investment," Ishiba told reporters.

"It's something we have to take seriously."

Japan and the United States are each other's top foreign........

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