"Chinese fleet sails near Japanese Senkaku islands" http://www.bbc.com/news/world-asia-36996534
Japan says China has sailed a fleet of more than 230 vessels - most of them fishing boats - close to Japanese-controlled waters in the East China Sea.
Tokyo says the fleet included six coastguard ships, three of which appeared to be armed.
Japan has summoned Chinese diplomats to protest. http://ichef.bbci.co.uk/news/624/media/images/71609000/gif/_71609530_east_asian_air_ec_zones264.gif
Over recent years, Beijing has become increasingly assertive about its rights in waters it believes are Chinese.
Testing Japan's resolve
In this latest incident, Chinese boats sailed close to the Senkaku Islands, which are administered by Japan but also claimed by China. Beijing calls them the Diaoyu Islands.
How uninhabited islands soured China-Japan ties
A Japanese foreign ministry spokesman said the fleet's despatch was a unilateral escalation of tension in the area.
Less than a decade ago, Tokyo and Beijing talked of jointly exploiting the resources of the East China Sea, the waterway that separates the two countries.
But since then tension has increased, particularly over the disputed Senkakus, which are uninhabited.
http://ichef-1.bbci.co.uk/news/660/cpsprodpb/963B/production/_90695483_mediaitem90695481.jpg Japan says China sent coastguard vessels to escort the fishing boats
"Japan spots 230 Chinese fishing boats off disputed islets" http://www.dailymail.co.uk/wires/afp/article-3726562/Japan-spots-230-Chinese-fishing-boats-disputed-islets.html
Japan also lodged a protest in June after it said a Chinese navy frigate sailed close to