Chinese patrols make Japan 's government `` uncomfortable '' Japanese media reports patrols did not cross into Japanese territorial waters . Diplomatic tensions peaked in September after Japanese authorities arrested a Chinese fishing captain near the islands and detained him for more than two weeks . The move comes as China is ramping up its military presence in the South and East China seas after a series of disputes with Japan, including an air defense zone over disputed islands that Beijing claims to
Chinese patrols make Japan 's government `` uncomfortable '' Japanese media reports patrols did not cross into Japanese territorial waters . The move comes as China is ramping up its military presence in the South and East China seas after a series of disputes with Japan, including an air defense zone over disputed islands that Beijing claims to