自古中原農業民族與北亞游牧民族之間便是關係密切，本質是經濟性、文化性的，而非軍事性的。和親是一種典型的間接路線戰略。和親公主則是影響和親成敗的關鍵人物，可藉由對其政治角色的研究，進而探討彼此的互動模式、政治運作，以及對民族問提的省思。 　　本文的和親是指：中原朝廷與少數民族之間為了結盟、賄賂、賞賜、離間、……等目的，所行的一種非常態性的政治婚姻，開始在春秋戰國時代，被系統化成一種政策、戰略，是漢高祖時由劉敬提出。 　　本文範圍以漢到唐初為中心，主要的和親公主有王昭君、細君公主、解憂公主、馮嫽、千金公主、義成公主等人。研究方法以史學為基礎，著重政治學、軍事學、社會學、民族學的分析。內容分為六章十七節，以及緒論、結論，127頁，約廿萬餘字。 　　本文的主要限制在於缺乏北亞游牧民族自身的史料。未來的發展則可繼續研究其他和親公主的政治角色，以及歷代在歷史、政治環境變遷下，而封和親公主所產生的不同評價及傳說。最根本的仍是去了解中原農業民族與北亞游牧民族的彼此關係與相處模式。

在歐洲、北美、東南亞等地區皆有定期、頻繁的區域對話，對話內容廣泛，不再是過去國家安全、區域安全傳統定義下的「安全對話」。然而區域對話風氣的盛行，在東北亞地區卻嗅不到一絲絲這樣的氣息。東北亞地區由於本身的歷史特殊性與地緣政治的特性，在國際關係上始終是各國利益的錯綜複雜的區域。 東北亞地區國際政治衝突點主要為：領土糾紛、北韓核武危機、中日關係、日人綁架事件。北韓核武危機背後的動機主要是冷戰為結束之前，美國在南韓部署戰術核武瞄準北韓，北韓基於安全考量，於是發展核武計畫，另一原因則是針對日本，北韓視日本為安全威脅，基於歷史因素，北韓將其核武計畫背後目標對準日本。 冷戰結束後的新安全環境，應該要以區域安全考量為核心，東北亞地區主要的安全形勢是美國仍是東北亞地區重要的安全主導者，同時美日聯盟是區域內重要的安全安排，隨者中國的經濟持續發展，中國將在東北亞地區扮演重要角色。多邊協商與合作是解決東北亞地區安全問題最有效的辦法，定期舉多邊對話更可增加行為者之間的了解與互信，多邊主義可以解決區域內危機。東北亞地區多邊合作經驗豐富，雖然多半是非正式的二軌多邊對話經驗，不過非正式的對話多邊機制剛好符合亞太地區的特色，差異性大的亞太國家，或者是在冷戰痕跡深刻的東北亞地區，都以應養成對話習慣，針對區域內的危機熱點例如北韓問題、中日歷史爭議、中美關係、中日東海油源紛爭、日俄領土爭議等問題，都可以藉著多邊對話機制建立信心措施。 目前正在進行中的六邊會談正好替東北亞國家提供一個良好的基礎，雖然目前六邊會談是以解決北韓核武危機為主要，不過在六邊會談裡參與成員對等，並且六邊會談也沒有抹煞美國雙邊同盟的功能，日後東北亞國家應可以以六邊會談為基礎，討論更多區域內安全議題，促進東北亞地區的對話。東北亞地區多邊對話機制的發展可以融入冷戰結束後的新興安全觀念。如此一來反而有利既存的六邊會談進一步發展。 / There is EU as a multilateral forum in Europe. There is ASEAN in Southeast Asia for Asia countries to understand policies of each country and get better transparency. The international relations between Northeast Asia countries have always been complicated and uncertain. However, there is no multilateral dialogue in Northeast Asia. To study the multilateral dialogue mechanism, we must pay attention to Multilateralism. And because of the unique security situation in Northeast Asia after Cold War, we have also to take the cooperative security, common security and comprehensive security into consideration. Thus, we can discuss the possibility of developing a multilateral dialogue mechanism in Northeast Asia. A multilateral dialogue mechanism is a dialoguing forum that three or more countries cooperate with each other under some principles, with habits of practicing, without agenda limits, no participation limit, in order to solve security problems and reduce confrontations. The second North Korea nuclear crisis happened in 2002. The first Six-Party Talks began in 2003 and has hold for four times until now. Six-Party Talks can be viewed as a foundation of multilateral mechanism in Northeast Asia, despite there are still some shortcomings. As long as Six-Party Talks keeps meeting, it is an achievement of dialogue for Northeast Asia countries. Six-Party Talks makes it possible that solving the crisis in a peaceful way and taking the diplomatic way to engage with DPRK. The Japan-US Alliance is the key factor to influence the international politics in Northeast Asia. Basically, the bilateral relations between US and Asia Pacific countries have become a “wheel”. The hub of USA is a key factor of developing a multilateral mechanism or not. To develop a multilateral mechanism in Northeast Asia must cooperate with US and not against its interests in Pacific Asia. Also, Northeast Asia countries have to build their mutual confidence and interests dependence.

北韓自1950年代起逐步建立其核武實力，形成對國際社會的嚴重威脅，基於其政權生存與經濟的需要，動輒以核武要脅國際社會換取能源、糧食援助及安全保障。1994年第一次北韓核武危機結束後，由於美國與北韓後續未確實履行核框架協議，從2002年10月北韓承認恢復其核計畫、美國開始停止對北韓供應重油起，北韓動作頻頻，除自2003年1月10日起宣佈退出禁止核子武器擴散條約外，更積極發展核武抗衡美國與國際社會，對相關國家的安全造成莫大影響，並期望藉此獲得所需的政治利益與經濟援助。北韓的行為引起國際關注，視之為第二次北韓核武危機。中共、南韓、日本、俄羅斯及美國對此均投以高度關注，努力謀求解決之道，而中共更是此次核武危機演變與發展的關鍵斡旋角色。 第二次北韓核武危機發生以來，中共對核武問題的解決發生了建設性的作用，各輪會談能夠持續運作，中共以穿梭外交遊走於各國功不可沒，其角色重要而多樣，儼然成為斡旋者、調停者、領導者、防衛者、緩衝器、利益攸關者、平衡者、機制建議者，若依北韓核武危機往良性發展的端倪來看，未來中共更可能兼具經濟支援者、安全保障者和制度監督者的角色。此次的核武危機為中共大國外交提供難得的歷史機運，藉由複雜的危機解決過程，緩和了危機的緊張態勢，更藉由與各國間的互動與合作，獲得實質外交進展，提高了中共的國際影響力，同時這樣的作為也是符合各方利益的最佳選擇。 本文主要包含兩大方向：首先探討第二次北韓核武危機的背景與判斷北韓發展核武的動機，繼之簡述兩次核武危機始末；接著統整自三邊會談、六方會談召開以來之情勢發展及與會各國互動形成的共識共決，分析中共居中的角色與其國家利益之間的關聯性，並研判該議題未來走向。 / Since 1950s North Korea has gradually built up its nuclear weapon capabilities, forming a serious threat to international community. Based on the need of regime survival and economy, North Korea frequently uses nuclear weapons in threatening international community for exchanges of energy, food aid and security assurances. After the end of the First North Korea Nuclear Crisis in 1994, US and North Korea did not actually carry out the Agreed Framework, North Korea confessed to restart its nuclear program in October 2002 while US suspended supplying heavy fuel oil to North Korea. In addition to its withdrawal from the Nuclear Nonproliferation Treaty, North Korea also actively develops nuclear weapons to contend with the US and international community, bringing about huge impacts on the security of relative countries, hoping to exchange for more political benefit and economic assistance. The behavior of North Korea has raised international attention, regarding it as the Second North Korea Nuclear Crisis. China, South Korea, Japan, Russia and the US all pay high attention and work hard to seek for solutions to the crisis. China has played a key role in the evolution and development of the Second North Korea Nuclear Crisis. Since the inception of the 2nd North Korea Nuclear Crisis, China has turned out to be constructively pivotal in solving nuclear weapon problems. The fact that six rounds of talks can take place continuously go to China’s credit, which pursues shuttle diplomacy to coordinate the activities of the other six-party talks participators, playing roles that are important yet various, apparently becoming a mediator, good officer, host, defender, buffer, stakeholder, balancer, mechanism keeper, and, in viewing from the point that North Korea Nuclear Crisis has been developed toward a more positive direction, China will more than likely take key role as economic supporter, security guarantor and mechanism supervisor. This nuclear crisis provides China a rare historical opportunity of big-power diplomacy. Through complex crisis solving process to détente intense situation and the interaction and cooperation among Northeast Asian nations to obtain actual diplomatic progress, the influence of China has soared while such action is the best choice in complying with relative nation’s interests. The study mainly include two directions: At first the background of the Second North Korea Nuclear Crisis be reviewed and the motive of North Korea in developing nuclear weapon be determined. Then how the two nuclear crises began and ended are briefly stated, followed by integration of situation development since the Three-party talks, Six-party talks and the common agreement formed among participating nations. The role of China and relations to its interest is analyzed and thus the future direction of the issues is also carefully studied.