北极联盟
21世纪初期由7个国家构成的联邦共和制国家,在两个超级大国夹缝中的永久中立国。
与北极相连，是支撑世界各国北极观测基地的重要地区。
人口稀疏，永久冻土占据了国土的六成。
虽在石油战争初期被卷入战火，但随着战时北极条约的缔结而变为非交战区，因此遭受的损害较少。

温暖化
战争与海上可燃冰开采事故加剧了温暖化的进程。2050年度平均气温相较十年前上升了两度，气候异常带来的极端天气与海平面上升威胁着人们的生活。温暖化和资源枯竭可以说是21世纪后半期人类最大的课题。
受到温暖化的影响，全球范围的永久冻土开始溶解。特别对于永久冻土占据国土面积六成的北连来说不容忽视。
溶解带来的地表下沉使得基础设施的维护成本急剧上升，这对冻土范围内的建筑物、道路、铁道设施带来了致命的打击。
讽刺的是这对于矿业和石油产业来说却是个好消息，冻土的溶解使他们发现了更多可开采的油田与矿床：战争与全球变暖在一定程度上缓解了北联的资源问题。
北联所需的能源资源极度依靠进口。2052年的能源自给率为10.3%，与2049年的6.0%相比虽略有上升，但与其他国家比较仍处于相当低的水平。
由于资源枯竭，各国的能源出口量逐年减少，新能源的开发成为了北联最重要的问题。因此，永久冻土下存在的甲烷水合物开始被人们所重视。

Arctic Alliance
At the beginning of the 21st century, a federal republic composed of seven countries, a permanent neutral state between the two superpowers.
Connected to the North Pole, it is an important area that supports the Arctic Observation Base of all countries in the world.
The population is sparse, and permafrost occupies 60% of the country.
Although it was involved in the war at the beginning of the oil war, it became a non-war zone with the conclusion of the Arctic Treaty during the war, so it suffered less damage.

Warming
Wars and accidents involving the mining of combustible ice at sea have exacerbated the warming process. The average temperature in 2050 has risen by two degrees compared to a decade ago. Extreme weather and rising sea levels brought about by abnormal climate threaten people's lives. Warming and resource depletion can be said to be the biggest issue for mankind in the second half of the 21st century.
Affected by warming, permafrost on a global scale began to dissolve. Especially for the North Company, where permafrost occupies 60% of the country's land area, it cannot be ignored.
The surface subsidence caused by the dissolution has caused the maintenance cost of infrastructure to rise sharply, which has brought a fatal blow to the buildings, roads, and railway facilities in the permafrost range.
Ironically, this is good news for the mining and petroleum industries. The dissolution of frozen soil has allowed them to discover more exploitable oil fields and deposits: war and global warming have alleviated Beilian’s resource problems to a certain extent.
The energy resources required by Beilian are extremely dependent on imports. The energy self-sufficiency rate in 2052 is 10.3%, which is a slight increase compared with 6.0% in 2049, but it is still at a fairly low level compared with other countries.
Due to the exhaustion of resources, the energy exports of various countries have been decreasing year by year, and the development of new energy has become the most important issue of Beilian. Therefore, the methane hydrates existing under permafrost began to be valued by people.