Two China Coast Guard ships aggressively harassed an Ishigaki City environmental survey of the Senkaku Islands (Okinawa), disrupting its conservation efforts.
Citing "bias against China," an Ishigaki paper refused an ad because the book presents historical facts affirming Japanese sovereignty over the Senkakus.
Four Chinese ships entered the area while the Senkaku Islands survey was in progress, forcing the Japan Coast Guard to surround and protect the research vessel.