The relationship between China and Europe will be determined by Beijing's behavior, including what happens with Taiwan, the European Union's foreign policy chief said on Sunday. The comments from EU High Representative Josep Borrell, in a remote address at the start of the meeting of the Group of Seven (G7) foreign ministers in Japan, highlighted two of the themes that have come into focus ahead of the three-day gathering: the need for a united approach to China and concerns about Taiwan. China is front and center as the foreign ministers of the world's advanced democracies meet in the Japanese resort…