21 美國政府針對兩岸關係每每重申，堅持一個中國的政策，遵守美中三個聯合公報的原則，試問美中三個聯合 公報，除了「建交公報」、「軍售公報」外，還包括：
(A)南京公報
(B)上海公報
(C)廣州公報
(D)北京公報

「上海公報」1972年在上海簽署，「美方認知（acknowledges）海峽兩岸的中國人都認為只有一個中國，台灣是中國的一部分，對這一立場不提出異議（not to challenge）。」 

中美建交公報」1979年1月1生效，美國與中國大陸建交，同一時間與中華民國斷交。公報內容包括，美國首次承認（recognizes）「中華人民共和國政府是中國的唯一合法政府」，美國認知（acknowledges）中國（人）立場（the Chinese position），只有一個中國，台灣是中國的一部分。

「八一七公報」由美國總統雷根1982年與中國大陸時任國務院總理趙紫陽簽訂，目的是「聯中抗俄」。公報中提及美國對台灣軍售承諾，包括向台灣出售的武器在性能和數量上不超過美中建交後近幾年供應的水準、準備逐步減少對台灣的武器出售、並同意經過一段時間最後解決。 

「台灣關係法」則是1979年美國與中華民國斷交之後，經美國國會通過後的美國國內法，用來規範之後與台灣之間的關係。重要內容包括：期望台灣前途將以和平方式決定、任何企圖以非和平方式決定台灣的前途之舉，包括使用經濟抵制及禁運手段在內，為美國所嚴重關切；提供防禦性武器給台灣人民。

February 28, 1972

U.S.-PRC JOINT COMMUNIQUE (1972)《上海公報》

1. President Richard Nixon of the United States of America visited the People’s Republic of China at the invitation of Premier Chou En-lai of the People’s Republic of China from February 21 to February 28, 1972. Accompanying the President were Mrs. Nixon, U.S. Secretary of State William Rogers, Assistant to the President Dr. Henry Kissinger, and other American officials.

2. President Nixon met with Chairman Mao Tsetung of the Communist Party of China on February 21. The two leaders had a serious and frank exchange of views on Sino-U.S. relations and world affairs.

3. During the visit, extensive, earnest and frank discussions were held between President Nixon and Premier Chou En-lai on the normalization of relations between the United States of America and the People’s Republic of China, as well as on other matters of interest to both sides. In addition, Secretary of State William Rogers and Foreign Minister Chi Peng-fei held talks in the same spirit.

4. President Nixon and his party visited Peking and viewed cultural, industrial and agricultural sites, and they also toured Hangchow and Shanghai where, continuing discussions with Chinese leaders, they viewed similar places of interest.

5. The leaders of the People’s Republic of China and the United States of America found it beneficial to have this opportunity, after so many years without contact, to present candidly to one another their views on a variety of issues. They reviewed the international situation in which important changes and great upheavals are taking place and expounded their respective positions and attitudes.

6. The Chinese side stated: Wherever there is oppression, there is resistance. Countries want independence, nations wan liberation and the people want revolution–this has become the irresistible trend of history. All nations, big or small, should be equal: big nations should not bully the small and strong nations should not bully the weak. China will never be a superpower and it opposes hegemony and power politics of any kind. The Chinese side stated that it firmly supports the struggles of all the oppressed people and nations for freedom and liberation and that the people of all countries have the right to choose their social systems according their own wishes and the right to safeguard the independence, sovereignty and territorial integrity of their own countries and oppose foreign aggression, interference, control and subversion. All foreign troops should be withdrawn to their own countries. The Chinese side expressed its firm support to the peoples of Viet Nam, Laos and Cambodia in their efforts for the attainment of their goal and its firm support to the seven-point proposal of the Provisional Revolutionary Government of the Republic of South Viet Nam and the elaboration of February this year on the two key problems in the proposal, and to the Joint Declaration of the Summit Conference of the Indochinese Peoples. It firmly supports the eight-point program for the peaceful unification of Korea put forward by the Government of the Democratic People’s Republic of Korea on April 12, 1971, and the stand for the abolition of the “U.N. Commission for the Unification and Rehabilitation of Korea”. It firmly opposes the revival and outward expansion of Japanese militarism and firmly supports the Japanese people’s desire to build an independent, democratic, peaceful and neutral Japan. It firmly maintains that India and Pakistan should, in accordance with the United Nations resolutions on the Indo-Pakistan question, immediately withdraw all their forces to their respective territories and to their own sides of the ceasefire line in Jammu and Kashmir and firmly supports the Pakistan Government and people in their struggle to preserve their independence and sovereignty and the people of Jammu and Kashmir in their struggle for the right of self-determination.

7. The U.S. side stated: Peace in Asia and peace in the world requires efforts both to reduce immediate tensions and to eliminate the basic causes of conflict. The United States will work for a just and secure peace: just, because it fulfills the aspirations of peoples and nations for freedom and progress; secure, because it removes the danger of foreign aggression. The United States supports individual freedom and social progress for all the peoples of the world, free of outside pressure or intervention. The United States believes that the effort to reduce tensions is served by improving communication between countries that have different ideologies so as to lessen the risks of confrontation through accident, miscalculation or misunderstanding. Countries should treat each other with mutual respect and be willing to compete peacefully, letting performance be the ultimate judge. No country should claim infallibility and each country should be prepared to reexamine its own attitudes for the common good. The United States stressed that the peoples of Indochina should be allowed to determine their destiny without outside intervention; its constant primary objective has been a negotiated solution; the eight-point proposal put forward by the Republic of Viet Nam and the United States on January 27, 1972 represents a basis for the attainment of that objective; in the absence of a negotiated settlement the United States envisages the ultimate withdrawal of all U.S. forces from the region consistent with the aim of self-determination for each country of Indochina. The United States will maintain its close ties with and support for the Republic of Korea; the United States will support efforts of the Republic of Korea to seek a relaxation of tension and increased communication in the Korean peninsula. The United States places the highest value on its friendly relations with Japan; it will continue to develop the existing close bonds. Consistent with the United Nations Security Council Resolution of december 21, 1971, the United States favors the continuation of the ceasefire between India and Pakistan and the withdrawal of all military forces to within their own territories and to their own sides of the ceasefire line in Jammu and Kashmir; the United States supports the right of the peoples of South Asia to shape their own future in peace, free of military threat, and without having the area become the subject of great power rivalry.

8. There are essential differences between China and the United States in their social systems and foreign policies. However, the two sides agreed that countries, regardless of their social systems, should conduct their relations on the principles of respect for the sovereignty and territorial integrity of all states, non-aggression against other states, non-interference in the internal affairs of other states, equality and mutual benefit, and peaceful coexistence. International disputes should be settled on this basis, without resorting to the use or threat of force. The United States and the People’s Republic of China are prepared to apply these principles to their mutual relations.

9. With these principles of international relations in mind the two sides stated that:

1. progress toward the normalization of relations between China and the United States is in the interests of all countries
2. both wish to reduce the danger of international military conflict
3. neither should seek hegemony in the Asia-Pacific region and each is opposed to efforts by any other country or group of countries to establish such hegemony
4. neither is prepared to negotiate on behalf of any third party or to enter into agreements or understandings with the other directed at other states.

10. Both sides are of the view that it would be against the interests of the peoples of the world for any major country to collude with another against other countries, or for major countries to divide up the world into spheres of interest.

11. The two sides reviewed the long-standing serious disputes between China and the United States. The Chinese side reaffirmed its position: the Taiwan question is the crucial question obstructing the normalization of relations between China and the United States; the Government of the People’s Republic of China is the sole legal government of China; Taiwan is a province of China which has long been returned to the motherland; the liberation of Taiwan is China’s internal affair in which no other country has the right to interfere; and all U.S. forces and military installations must be withdrawn from Taiwan. The Chinese Government firmly opposes any activities which aim at the creation of “one China, one Taiwan”, “one China, two governments”, “two Chinas”, an “independent Taiwan” or advocate that “the status of Taiwan remains to be determined”.

12. The U.S. side declared: The United States acknowledges that all Chinese on either side of the Taiwan Strait maintain there is but one China and that Taiwan is a part of China. The United States Government does not challenge that position. It reaffirms its interest in a peaceful settlement of the Taiwan question by the Chinese themselves. With this prospect in mind, it affirms the ultimate objective of the withdrawal of all U.S. forces and military installations from Taiwan. In the meantime, it will progressively reduce its forces and military installations on Taiwan as the tension in the area diminishes. The two sides agreed that it is desirable to broaden the understanding between the two peoples. To this end, they discussed specific areas in such fields as science, technology, culture, sports and journalism, in which people-to-people contacts and exchanges would be mutually beneficial. Each side undertakes to facilitate the further development of such contacts and exchanges.

13. Both sides view bilateral trade as another area from which mutual benefit can be derived, and agreed that economic relations based on equality and mutual benefit are in the interest of the peoples of the two countries. They agree to facilitate the progressive development of trade between their two countries.

14 The two sides agreed that they will stay in contact through various channels, including the sending of a senior U.S. representative to Peking from time to time for concrete consultations to further the normalization of relations between the two countries and continue to exchange views on issues of common interest.

15. The two sides expressed the hope that the gains achieved during this visit would open up new prospects for the relations between the two countries. They believe that the normalization of relations between the two countries is not only in the interest of the Chinese and American peoples but also contributes to the relaxation of tension in Asia and the world.

16. President Nixon, Mrs. Nixon and the American party expressed their appreciation for the gracious hospitality shown them by the Government and people of the People’s Republic of China.

January 1, 1979

U.S.-PRC JOINT COMMUNIQUE (1979)《建交公報》

JOINT COMMUNIQUE OF THE UNITED STATES OF AMERICA AND THE PEOPLE’S REPUBLIC OF CHINA (NORMALIZATION COMMUNIQUE)

(The communique was released on December 15, 1978, in Washington and Beijing.)

1. The United States of America and the People’s Republic of China have agreed to recognize each other and to establish diplomatic relations as of January 1, 1979.
2. The United States of America recognizes the Government of the People’s Republic of China as the sole legal Government of China. Within this context, the people of the United States will maintain cultural, commercial, and other unofficial relations with the people of Taiwan.
3. The United States of America and the People’s Republic of China reaffirm the principles agreed on by the two sides in the Shanghai Communique and emphasize once again that:
4. Both wish to reduce the danger of international military conflict.
5. Neither should seek hegemony in the Asia-Pacific region or in any other region of the world and each is opposed to efforts by any other country or group of countries to establish such hegemony.
6. Neither is prepared to negotiate on behalf of any third party or to enter into agreements or understandings with the other directed at other states.
7. The Government of the United States of America acknowledges the Chinese position that there is but one China and Taiwan is part of China.
8. Both believe that normalization of Sino-American relations is not only in the interest of the Chinese and American peoples but also contributes to the cause of peace in Asia and the world.

The United States of America and the People’s Republic of China will exchange Ambassadors and establish Embassies on March 1, 1979.

August 17, 1982

U.S.-PRC JOINT COMMUNIQUE (1982)《八一七公報》《軍售公報》

1. In the Joint Communique on the Establishment of Diplomatic Relations on January 1, 1979, issued by the Government of the United States of America and the People’s Republic of China, the United States of America recognized the Government of the People’s Republic of China as the sole legal Government of China, and it acknowledged the Chinese position that there is but one China and Taiwan is part of China. Within that context, the two sides agreed that the people of the United States would continue to maintain cultural, commercial, and other unofficial relations with the people of Taiwan. On this basis, relations between the United States and China were normalized.
2. The question of United States arms sales to Taiwan was not settled in the course of negotiations between the two countries on establishing diplomatic relations. The two sides held differing positions, and the Chinese side stated that it would raise the issue again following normalization. Recognizing that this issue would seriously hamper the development of United States – China relations, they have held further discussions on it, during and since the meetings between President Ronald Reagan and Premier Zhao Ziyang and between Secretary of State Alexander M. Haig, Jr. and Vice Premier and Foreign Minister Huang Hua in October 1981.
3. Respect for each other’s sovereignty and territorial integrity and non-interference in each other’s internal affairs constitute the fundamental principles guiding United States China relations. These principles were confirmed in the Shanghai Communique of February 28, 1972 and reaffirmed in the Joint Communique on the Establishment Of Diplomatic Relations which came into effect on January 1, 1979. Both sides emphatically state that these principles continue to govern all aspects of their relations.
4. The Chinese Government reiterates that the question of Taiwan is China’s internal affair. The Message to Compatriots in Taiwan issued by China on January 1, 1979 promulgated a fundamental policy of striving for peaceful reunification of the motherland. The Nine-Point Proposal put forward by China on September 30, 1981 represented a further major effort under this fundamental policy to strive for a peaceful solution to the Taiwan question.
5. The United States Government attaches great importance to its relations with China, and reiterates that it has no intention of infringing on Chinese sovereignty and territorial integrity, or interfering in China’s internal affairs, or pursuing a policy of “two Chinas” or “one China, one Taiwan.” The United States Government understands and appreciates the Chinese policy of striving for a peaceful resolution of the Taiwan question as indicated in China’s Message to Compatriots in Taiwan issued on January 1, 1979 and the Nine-Point Proposal put forward by China on September 30, 1981. The new situation which has emerged with regard to the Taiwan question also provides favorable conditions for the settlement of United States – China differences over United States arms sales to Taiwan.
6. Having in mind the foregoing statements of both sides, the United States Government states that it does not seek to carry out a long-term policy of arms sales to Taiwan, that its arms sales to Taiwan will not exceed, either in qualitative or in quantitative terms, the level of those supplied in recent years since the establishment of diplomatic relations between the United States and China, and that it intends gradually to reduce its sale of arms to Taiwan, leading, over a period of time, to a final resolution. In so stating, the United States acknowledges China’s consistent position regarding the thorough settlement of this issue.
7. In order to bring about, over a period of time, a final settlement of the question of United States arms sales to Taiwan, which is an issue rooted in history, the two Governments will make every effort to adopt measures and create conditions conducive to the thorough settlement of this issue.
8. The development of United States – China relations is not only in the interests of the two peoples but also conducive to peace and stability in the world. The two sides are determined, on the principle of equality and mutual benefit, to strengthen their ties in the economic, cultural, educational, scientific, technological and other fields and make strong, joint efforts for the continued development of relations between the Governments and peoples of the United States and China.
9. In order to bring about the healthy development of United States – China relations, maintain world peace and oppose aggression and expansion, the two Governments reaffirm the principles agreed on by the two sides in the Shanghai Communique and the Joint Communique on the Establishment of Diplomatic Relations. The two sides will maintain contact and hold appropriate consultations on bilateral and international issues of common interest.

Note: In an internal presidential memo, dated August 17, 1982, President Ronald Reagan provides his interpretation of the Communique:

As you know, I have agreed to the issuance of a joint communique with the People’s Republic of China in which we express United States policy toward the matter of continuing arms sales to Taiwan.

The talks leading up to the signing of the communique were premised on the clear understanding that any reduction of such arms sales depends upon peace in the Taiwan Straits and the continuity of China’s declared “fundamental policy” of seeking a peaceful resolution of the Taiwan issue.

In short, the U.S. willingness to reduce its arms sales to Taiwan is conditioned absolutely upon the continued commitment of China to the peaceful solution of the Taiwan-PRC differences.  It should be clearly understood that the linkage between these two matters is a permanent imperative of U.S. foreign policy.

In addition, it is essential that the quality and quantity of the arms provided Taiwan be conditioned entirely on the threat posed by the PRC.  Both in quantitative and qualitative terms, Taiwan’s defense capability relative to that of the PRC will be maintained.