The map of China on the website of the United States Department of State shows Taiwan as being part of Chinese territory. Taiwan (officially Republic of China , ROC) has never been de facto or de jure controlled by the People's Republic of China (PRC). Nevertheless, Beijing insists that Taiwan is part of its territory and it has vowed to use force to achieve "reunification" if all peaceful options were exhausted. China has oftentimes urged the Taiwanese government to adhere to the so-called " 1992 consensus ", according to which there is only one China in the world and Taiwan is part of it. But Taiwanese President Ts'ai Ing-wen has refused to endorse Beijing's position and is seeking to maintain the status quo of de facto independence. During the Sino-American negotiations that took place in the 1970s, Beijing requested that the United States broke off diplomatic relations with the ROC. In August 1977 Cyrus Vance, Jimmy Carte