11.   Relations between the two rivals, both NATO members, have been marred by disputes over uninhabited islets, territorial waters and airspace in the Aegean.

12.   Rivals China and Taiwan both claim the uninhabited East China Sea islets, but agree that Japan must give them up.

13.   Tensions were high recently over the ownership of uninhabited islets in the Aegean.

14.   The government imposed the ban on activities near the uninhabited islet in February.

15.   The neighboring countries have longstanding disputes over airspace, territorial waters, seabed mineral rights and uninhabited islets as well as the divided Mediterranean island of Cyprus.

16.   The two countries nearly went to war in January after Turkey laid claim to an uninhabited islet in the eastern Aegean Sea.

17.   The uninhabited islets, claimed wholly or in part by China, the Philippines and four other countries, may sit on oil and valuable minerals.

18.   The two countries nearly went to war in January after Turkey laid claim to an uninhabited islet in the eastern Aegean that Athens says is Greek.

19.   The US brought the two countries back from the brink of war last January after they squared off over a group of uninhabited rocky islets.

20.   The United States last January defused a clash between the two countries over a group of uninhabited rocky islets.