Leaders from China, Japan and South Korea on Monday will cling their first trilateral assembly in additional than 4 years, as Beijing seeks to counteract U.S. efforts to paintings intently with Tokyo and Seoul — two main American allies within the Asia-Pacific area.The assembly underscores the balancing act that Tokyo and Seoul are seeking to strike as they are attempting to navigate the industrial and armed forces pageant between Washington and Beijing: Even supposing Japan and South Korea are safety allies of the US and feature stepped up joint army drills within the area, in addition they depend on China as their biggest buying and selling spouse.