The Taiwan independence movement is a political movement which advocates the formal declaration of an independent and sovereign Taiwanese state, as opposed to Chinese unification or the status quo in Cross-Strait relations. Currently, Taiwan's political status is ambiguous. China currently claims it is a province of the People's Republic of China (PRC), whereas the current Tsai Ing-wen administration of Taiwan maintains that Taiwan is already an independent country as the Republic of China (ROC) and thus does not have to push for any sort of formal independence. As such, the ROC consisting of Taiwan and other islands under its control already conducts official diplomatic relations with and is recognized by 13 member states of the United Nations and the Holy See. The use of "independence" for Taiwan can be ambiguous. If some supporters articulate that they agree to the independence of Taiwan, they may either be referring to the notion of formally creating an independent Taiwanese state or to the notion that Taiwan has become synonymous with the current Republic of China and is already independent (as reflected in the concept of One Country on Each Side). Some supporters advocate the exclusion of Kinmen and Matsu, which are controlled by Taiwan but are located off the coast of mainland China. Taiwan independence is supported by the Pan-Green Coalition in Taiwan but opposed by the Pan-Blue Coalition, which seeks to retain the somewhat ambiguous status quo of the Republic of China (Taiwan) under the so-called "1992 Consensus" or gradually "reunify" with mainland China at some point. The governments of the People's Republic of China (PRC) and the Republic of China (ROC) oppose Taiwanese independence since they believe that Taiwan and mainland China comprise two portions of a single country's territory. For the ROC, such a move would be considered a violation of its constitution. Both governments have formulated a "One-China Policy", whereby foreign countries may only conduct official diplomatic relations with either the PRC or the ROC, on the condition that they sever official diplomatic relations with and formal recognition of the other. The ROC's One-China policy was softened following democratization in the 1990s. Background At the conclusion of the First Sino-Japanese War on 17 April 1895, Taiwan was ceded by the Chinese Qing Empire to the Empire of Japan via the Treaty of Shimonoseki. A number of prominent officials in Taiwan who opposed the treaty declared independence and formed the