evidence: During World War II, ROC leader Chiang Kai-shek meets with U.S. President Franklin Roosevelt and British Prime Minister Winston Churchill in Cairo. After the conclusion of the conference, the Cairo Declaration is released, stating that "…Formosa [Taiwan], and the Pescadores [the Penghu Islands], shall be restored to the Republic of China…" [...] Following the 1951 San Francisco Peace Treaty with Japan signed by 48 Allied nations on behalf of the United Nations, the Treaty of Peace is signed between the ROC and Japan at Taipei Guest House, formally ending the state of war between the two parties. It is recognized that under Article 2 of the San Francisco Treaty, Japan has renounced all right, title, and claim to Taiwan (Formosa) and Penghu (the Pescadores) as well as the Spratly Islands and the Paracel Islands. All treaties, conventions and agreements concluded before Dec. 9, 1941, between China and Japan become null and void as a consequence of the war. [...] The ROC inks the Cross-Straits Economic Cooperation Framework Agreement (ECFA) with China to institutionalize economic and trade relations across the Taiwan Strait.