By David Brunnstrom, Simon Lewis, Trevor Hunnicutt and Tim Kelly TOKYO/WASHINGTON (Reuters) -The foreign ministers of Japan and the United States said their countries' ties were stronger than ever on Tuesday,

US Secretary of State Antony Blinken insisted during a visit to Tokyo on Tuesday that ties with Japan were stronger than ever, days after President Joe Biden blocked Nippon Steel's takeover of US Steel.

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

Secretary of State Antony Blinken lauded the close economic and security partnership between the US and Japan after a controversial move by US President Joe Biden to label Japan’s Nippon Steel Corp. as a national security risk.

The president said he was moving to protect national security in deciding the fate of the iconic Pennsylvania-based company, which became a contentious political issue in an election year.

Nippon Steel touted the $14.9 billion deal as a lifeline for its rusting US rival, but opponents warned that the Japanese firm would slash jobs -- despite assurances to the contrary.

US Secretary of State Antony Blinken was in Japan on Tuesday for talks expected to address North Korean missile launches, but President Joe Biden's blocking of a steel deal is straining the allies' warm ties.

By David Brunnstrom, Simon Lewis, Trevor Hunnicutt and Tim Kelly WASHINGTON/TOKYO (Reuters) -U.S. President Joe Biden's decision to block Nippon Steel's $14.9 billion bid for U.S. Steel cast a shadow over Secretary of State Antony Blinken's visit to Japan on Tuesday for farewell meetings with Washington's most important ally in Asia.

It was meant to be a final swing through Tokyo topped with a sushi breakfast to cement closer ties with one of the US’s closest allies.