Beijing on Tuesday announced penalties for "illegal" fishing in its waters, including those it claims in the South China Sea, weeks after an international tribunal ruled that those claims have no legal basis.
China has urged Vietnam to investigate claims that a Chinese visitor's passport was defaced with profanities by officials at Ho Chi Minh City airport, in an apparent reference to a bitter territorial spat between the nations.
China and Russia will hold joint naval exercises in the South China Sea in September, Beijing's defence ministry said Thursday, after an international tribunal invalidated the Asian giant's extensive claims in the area.
Southeast Asian nations Monday ducked direct criticism of China over its claims to the South China Sea, in a diluted statement produced after days of disagreement that gives the superpower a diplomatic victory.
Vietnam has warned that the inability of Southeast Asian nations to forge a unified front against Beijing's militarisation of the South China Sea is a "test" of the regional bloc in the face of its greatest security challenge.
Southeast Asian nations are in unparalleled disarray over Beijing's sabre-rattling in the South China Sea, analysts and insiders say, with the fractures set to deepen as staunch China ally Laos hosts top regional diplomats this weekend.