Biden blocks Nippon Steel's $14.9B U.S. Steel bid, sparking tensions during Blinken's Japan visit amid efforts to strengthen alliances against China.

U.S. President Joe Biden's decision to block Nippon Steel's $14.9 billion bid for U.S. Steel has cast a shadow over Secretary of State Antony Blinken's visit to Japan, raising concerns about U.S.-Japan ties.

Announced Friday, the decision comes as the U.S. seeks stronger alliances with Japan and South Korea to counter China's military expansion.

Japanese Prime Minister Shigeru Ishiba called the move "perplexing," and analysts warn it may deter foreign investment, though its impact on broader U.S.-Japan relations is expected to be limited due to shared security concerns. Nippon Steel and U.S. Steel have filed a lawsuit against Biden, claiming the merger was blocked under a "sham" national security review.

Blinken, joined by National Security Adviser Jake Sullivan, met Japanese Foreign Minister Takeshi Iwaya and emphasized the enduring strength of U.S.-Japan ties. The visit aims to build on trilateral cooperation with South Korea, despite political challenges in Seoul.

While Japan sees the merger's rejection as a setback, experts note Japan is unlikely to let it damage its strategic partnership with the U.S. However, business lobbies on both sides argue the decision could harm efforts to create secure supply chains, potentially benefiting China.

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