BEIJING—Officers from the United States and Taiwanese coast guards have met to discuss improving cooperation and communication despite efforts by China to isolate the self-governing island democracy. The virtual meeting held Tuesday came amid moves by the United States and others to defy Beijing’s pressure campaign aimed at compelling Taiwan to accept its view that the island is part of China. China on Tuesday recalled its ambassador to Lithuania and expelled the Baltic nation’s top representative to Beijing over its decision to allow Taiwan to open an office in Lithuania under its own name. Chinese leader Xi Jinping has increased diplomatic, economic, and military pressure on Taiwan, whose residents overwhelmingly reject Beijing’s demand for political unification with the mainland. China has long blocked Taiwan from taking part in the United Nations and other international organizations and has stepped up such pressure since the election of independence-minded Taiwanese President Tsai Ing-wen …