Sino-Soviet border issue

Japanese: 中ソ国境問題 - ちゅうソこっきょうもんだい

China's northeastern part borders Siberia (Russian Federation, former Soviet Union) and northern Mongolia, and its western part borders Central Asia (former Soviet territory). The direct border between the two countries stretches for a total of 7,000 km, and including the border with Mongolia, it is 10,000 km long, making it the longest border in the world. If the border was divided by military districts (military regions) rather than by administrative divisions and listed from east to west, China's Shenyang Military Region (headquarters located in Shenyang) bordered two military districts of the former Soviet Union, that of Far East (Khabarovsk) and Transbaikalia (Chita), while China's military districts of Beijing, Lanzhou, and Xinjiang (Urumqi), via Mongolia, bordered two military districts of the former Soviet Union, that of Transbaikalia and Siberia (Novosibirisk), and China's Xinjiang Military Region bordered two military districts of the former Soviet Union, that of Central Asia (Alma-Ata, now Almaty) and Siberia.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

中国の東北部はシベリア(ロシア連邦，旧ソ連)，北部モンゴリアを介してシベリアに，西部は中央アジア(旧ソ連領)に接しており，両国国土の直接に接する国境線は延べ7000km，モンゴルとの国境線を含めると1万kmという，世界最長の国境線である。行政区画別ではなく，軍管区(軍区)別に国境線を区分し東方から西方へと併記すると，中国の瀋陽軍区(司令部所在地は瀋陽)が旧ソ連の極東(ハバロフスク)とザバイカル(チタ)の2軍管区に，モンゴルを介して，中国の北京(北京)，蘭州(蘭州)，新疆(ウルムチ)の3軍区が旧ソ連のザバイカル，シベリア(ノボシビリスク)の2軍管区に，そして中国の新疆軍区が旧ソ連の中央アジア(アルマ･アタ，現アルマトゥイ)とシベリアの2軍管区に，それぞれ接していた。

出典　株式会社平凡社世界大百科事典第２版について　情報

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