Japan on Thursday lodged a protest with China after four China Coast Guard vessels entered Japanese waters around the disputed Senkaku Islands in the East China Sea and an apparent drone was seen flying above one of the vessels.(Japan Coast Guard)Japanese government sources said the Air-Self Defense Force scrambled an F-15 fighter jet in response to the deployment of a drone for the first time around the disputed islands also claimed by China.Scrambling a jet against a small unmanned vehicle is another sign that Japan is on high alert over China's maritime assertiveness.A high-ranking Japan…READ FULL ARTICLE