21.   Anti-Japanese protests over the archipelago have mounted since Japanese ultra-nationalists built a lighthouse on one of the islands in July.

22.   The same group built a lighthouse on another Senkaku island seven years ago, but the agency has not authorised it because of protest from China and Taiwan.

23.   The protests started last year when Japanese built lighthouses and raised flags on the islands.

24.   The protests started last year when Japanese built lighthouses and raised flags on the Diaoyus.

25.   The territorial dispute flared up again in July when Japanese ultra-nationalists built a lighthouse and erected a Japanese flag on the islands.

26.   They have been the center of anti-Japanese protests on the mainland, in Taiwan and in Hong Kong since Japanese nationalists built a lighthouse there in July.

27.   They are claimed by China, Japan and Taiwan and became the center of anti-Japanese protests after Japanese nationalists built the lighthouse there in July.

28.   Protests erupted over the islands last year when Japanese nationalists built lighthouses and raised flags on them.

29.   The island group is claimed by China, Japan and Taiwan and have been the center of anti-Japanese demonstrations since Japanese nationalists built a lighthouse there in July.