世界的エネルギー危機 (2021年)
com/business/2021/oct/12/global-energy-crisis-how-key-countries-are-responding
1 2 “Explaining why natural gas plays such a big role in the Russia-Ukraine crisis”. NPR. 2022年3月8日閲覧。
↑ “Energy crisis: The blame game has begun - but are some of the claims just hot air?”. Sky News. (2021年9月22日). https://news.sky.com/story/energy-crisis-the-blame-game-has-begun-but-are-some-of-the-claims-just-hot-air-12413485
↑ “Europe’s Power Crisis Moves North as Water Shortage Persists”. Bloomberg. (2021年10月3日). https://www.bloomberg.com/news/articles/2021-10-03/europe-s-power-crisis-is-moving-north-as-water-shortage-worsens