Senkaku Islands in the context of "Ishigaki, Okinawa"

The Ryukyu Islands (Japanese: 琉球列島, Hepburn: Ryūkyū Rettō), also known as the Nansei Islands (南西諸島, Nansei Shotō; lit. 'Southwest Islands') or the Ryukyu Arc (琉球弧, Ryūkyū-ko), are a chain of Japanese islands that stretch southwest from Kyushu to Taiwan: the Ryukyu Islands are divided into the Satsunan Islands (Ōsumi, Tokara and Amami) and Okinawa Prefecture (Daitō, Miyako, Yaeyama, Senkaku, Okinawa, Sakishima Islands (further divided into the Miyako and Yaeyama Islands), and Yonaguni as the westernmost). The larger ones are mostly volcanic islands and the smaller mostly coral. The largest is Okinawa Island.

The climate of the islands ranges from humid subtropical climate (Köppen climate classification Cfa) in the north to tropical rainforest climate (Köppen climate classification Af) in the south. Precipitation is very high and is affected by the rainy season and typhoons. Except the outlying Daitō Islands, the island chain has two major geologic boundaries, the Tokara Strait (between the Tokara and Amami Islands) and the Kerama Gap (between the Okinawa and Miyako Islands). The islands beyond the Tokara Strait are characterized by their coral reefs.

The islands comprising the Taiwan Area under the jurisdiction of the Republic of China (ROC) are classified into various island groups. The island of Taiwan, also known as Formosa, is the largest island and the main component of the ROC-controlled territories. Islands that are claimed by the ROC but not administered, including those administered by the People's Republic of China (PRC), and those disputed with other countries such as the Tiaoyutai Islands (Senkaku Islands) and most of the South China Sea Islands, are excluded from this list.

At the adoption of Additional Articles of the Constitution of the Republic of China in the 1990s, these islands collectively form the "Free area of the Republic of China" or known alternatively as "Taiwan Area", which legally defines the territorial extent under the actual control of the ROC government.

The Japan Ground Self-Defense Force (Japanese: 陸上自衛隊, Hepburn: Rikujō Jieitai), JGSDF (陸自, Rikuji), also referred to as the Japanese Army, is the land warfare branch of the Japan Self-Defense Forces. Created on July 1, 1954, it is the largest of the three service branches.

New military guidelines, announced in December 2010, direct the Self-Defense Forces away from their Cold War focus on the Soviet Union to a new focus on China, especially in respect of the dispute over the Senkaku Islands.

The Senkaku Islands dispute, or Diaoyu Islands dispute, is a territorial dispute over a group of uninhabited islands known as the Senkaku Islands in Japan, the Diaoyu Islands in China, and Tiaoyutai Islands in Taiwan. Japan controlled the islands from 1895 until the end of World War II in 1945, after which the United States controlled the islands, which it administered as part of the Ryukyu Islands. In 1972, the United States transferred the islands to Japan. The islands are administered as part of the Okinawa Prefecture.

The islands are positioned close to key shipping lanes and rich fishing grounds, and there may be oil reserves in the area. Japan argues that it surveyed the islands in the late 19th century and found them to be terra nullius (Latin: land belonging to no one); subsequently, China acquiesced to Japanese sovereignty until the 1970s. According to Lee Seokwoo, China started taking up the question of sovereignty over the islands in the latter half of 1970 when evidence relating to the existence of oil reserves surfaced. Taiwan also claims the islands. The PRC and the ROC argue that documentary evidence prior to the First Sino-Japanese War indicates Chinese possession and that the territory is accordingly a Japanese seizure that should be returned as the rest of Imperial Japan's conquests were returned in 1945.