The United States has urged Japan not to attend as an observer the first meeting of signatories to a U.N. treaty banning nuclear weapons, according to U.S. government sources, reflecting Washington's opposition to the pact.The Japanese government has suggested it will come into line with the United States and take a cautious approach to the issue, the sources said. Prime Minister Fumio Kishida told a parliamentary committee on Thursday that Tokyo has no "concrete plans" to attend the meeting as an observer.The sources said the U.S. administration of President Joe Biden made the request to J…READ FULL ARTICLE