Japan and the United States are set to strengthen their security partnership with Britain, Australia and the Philippines to counter China's assertive military posture, government sources said Saturday.Under the closer security ties, the five countries will increase joint drills in the Indo-Pacific region and promote cooperation on defensive technologies, the sources said.The new partnership is expected to be agreed upon at a meeting of Japanese Prime Minister Fumio Kishida and U.S. President Joe Biden during an April 10 summit in Washington. It will be included in a joint statement to be is…READ FULL ARTICLE