Taiping Island
The arbitral tribunal has not invited Taiwan to join the arbitration, and no opinion of Taiwan has been sought. The Philippines claimed that Taiping Island is a rock. In response, Ma Ying-jeou, President of the Republic of China (Taiwan), rejected the Philippines' claim as "patently false". Taiwan invited the Philippines and five arbitrators to visit Taiping Island; the Philippines rejected the invitation, and there was no response from the PCA tribunal.