全球暖化改變了北極的地緣政治格局，也促使中國參與北極事務。北極為中國提供的機會包括:縮短通往歐洲和北美港口的航運距離，增加貿易競爭力;有助中國北方港口城市發展不同定位的港埠經濟，及改善中國東北地區的經濟結構;有助於中國取得北極蘊藏豐富的天然資源;及有助於緩解中國當前面臨的安全問題，如「麻六甲困境」。但中國也遇到若干挑戰，包括:北極海冰構成航行威脅，航運成本也會增加;北極國家對中國涉足北極的疑慮;偏重於亞洲的貿易格局制約中國對北極的投入;以及中國技術能量不足等..

Global warming has changed geopolitics of the Arctic and prompted China to participate in the Arctic affairs. The Arctic offers many opportunities for China. First, it shortens the shipping distances to European and North American ports in order to increase trade competitiveness. Second, it develops different kinds of harbor economy and improve economic structures in the northeast of China. Third, it is able to acquire rich natural resources in the Arctic. Fourth, the Arctic can ameliorate China’s security problems, suc..

蒙古位於亞洲內陸，夾處於中、俄兩大強國之間的戰略位置，使其曾長期被兩大強鄰視為領土的邊疆(frontier)。隨著 1991 年蘇聯瓦解，使近代蒙古第一次擁有完整主權。此後，蒙古的對外政策定調為「不結盟、等距離、全方位」，在「第三鄰國」戰略操作及地理條件基礎下，以平衡為原則，執行外交策略。誠然，蒙古如何在兩大強鄰之間求取平衡的生存之道，建構出獨立與靈活的外交及經貿空間，是蒙古確保國家安全的一大課題，也是本文的研究目的。  ..

Mongolia, with its strategic location between China and Russia in the inner Asia, is seen by its powerful neighbors for hundreds of years as a frontier. In 1991, modern Mongolia obtained complete sovereignty for the first time after the disruption of USSR, Hereafter, its foreign policy was principled upon “independence, non-alignment, multi-pillars”. Under the “third neighbor” strategy, Mongolia uses the opportunities endowed from its geography to balance neighboring threats, ensure its national securi..