>> Tensions on the water in Asia shifting focus on Monday to the East China Sea. Japan warning China it'll respond firmly after Beijing sailed 14 government ships close to a group of disputed islands controlled by Japan, but claimed by China. It's the biggest Chinese fleet to ever enter the area at once and comes immediately after Tokyo launched an official complaint with Beijing over radar equipment discovered on board a Chinese gas platform nearby.
As Reuters Michael Martina explains, this wasn't just any type of radar.>> Japan is concerned that this is a type of radar not typically used for gas field development but instead used by patrol ships. And that has Japan worried that China will use oil and gas platforms at sea as military installations.
Chinese DEME, of course, has been quick to say that there's nothing abnormal about the radar. And that is has the right to put whatever it wants to on its oil and gas rigs. Many experts believe Beijing is sending a message to Japan with its deployment of coast guard and fishing vessels in the East China Sea, basically that Tokyo should mind its own business.
>> No official borders exist on the water between the two sides, though Japan has repeatedly protested smaller scale injuries by China The two countries have an official agreement to cooperate when it comes to developing resources in the East China Sea. But according to Tokyo, Beijing is building oil and gas platforms as and when it chooses.