從21世紀開始，低敏感性的區域經濟整合已成為目前國際的趨勢。俄羅斯因應區域經濟整合趨勢，從傳統主導安全性區域整合改採以更有地緣政治優勢的能源戰略，來促進其建立在新「歐亞主義」的「歐亞經濟聯盟」。本文以地緣政治之能源戰略視角，檢視俄羅斯對前蘇聯國家的地緣政治與能源紛爭，並以交易成本經濟模型作為綜合型架構。本文認為國家作為一個理性行為者，俄羅斯運用地緣政治能源戰略降低交易成本。最後本文以交易成本變項來進一步分析前蘇聯國家與俄羅斯之議價能力。

In the 21st century, regional economic integration as a less sensitive issue has become the current international trend. In response to the trend of regional economic integration, Russia has changed from traditionally dominated thought of security regional integration to a more geopolitical energy strategy to promote its establishment of the “Eurasian Economic Union” based on the new “Eurasianism.” From the perspective of geopolitical-based energy strategy, the article examines Russia’s geopolitical and energy ..

本文以角色理論的分析架構探討土耳其於敘利亞北部所開展的三次軍事行動，包括：2016年「幼發拉底之盾行動」、2018年「橄欖枝行動」與2019年「和平之泉行動」。角色理論探討國家與他者互動過程中「驅動菁英的行為」，同時討論「國內政治與制度」，如何透過領導人而呈現出外交政策的樣貌，究係關心他者反應的「角色接受者」，或是強調自我認同的「角色創造者」？是強調國家利益的「獨立角色」？亦或是在乎他者認同的「互動角色」？ 據此，本文第一部分將從角色理論與土耳其過去的角色定位談起，進而分析三次行動下..

This paper deals with Turkey’s military deployments, including “Operation Euphrates Shield in 2016, Operation Olive Branch in 2018 and Operation Peace Spring in 2019 with theoretical analysis of “role theory”. Scholars of role theory focus on interactive process of “State” and “Others”. They not only analyze “what motivates political elites’ behavior”, but also discuss domestic politics and institution and their impacts on leaders and foreign policies. In response to other st..