 The Russia-Ukraine conflict has led to a natural gas supply shortage in European countries, prompting them to restart coal-fired power plants to maintain economic and social operations. However, the uneven distribution of coal resources in the world makes international trade inevitable, forming a coal trade network. When a country's coal exports are limited due to geopolitical factors, it can cause coal supply risks that spread along the trade network, potentially leading to the collapse of the network. The cascading failure model was used to build a crisis propagation model of the coal supply under the Russia-Ukraine conflict, showing that countries with high proportions of coal exports are at risk of becoming abnormal. When the Russian Federation reduced its coal exports by 80%, 23 European countries were the worst affected, and indirect risks spread to other countries. Multiple risks caused some countries to become abnormal, while others were affected by indirect risks. This article was authored by Huihuan, Jingying Zhao, Haibin Liu, and others.