美石油封锁，迫使古巴停供航空煤油

Group 1 - The core issue is that the new round of U.S. oil sanctions has led to a suspension of aviation fuel supply in Cuba, affecting the operations of nine major airports including Havana from February 10 to March 11 [1][2] - The aviation fuel Jet A-1, which is crucial for international civil aviation, is now in short supply due to these sanctions, impacting flight operations and increasing costs for airlines [2] - Cuba's tourism industry, a significant source of foreign exchange, is heavily reliant on air travel, and the timing of these sanctions coincides with the peak tourist season from December to March, raising concerns among travelers about potential disruptions to their plans [4] Group 2 - Travelers are expressing uncertainty regarding their return flights, as they may not know if flights will continue to operate due to the fuel supply issues [6] - The geopolitical context is tense, with the U.S. recently targeting Venezuela and indicating that Cuba could be next, leading to heightened scrutiny and sanctions against Cuba [8] - Cuban President Díaz-Canel has condemned the U.S. sanctions, labeling them as indicative of a fascist and criminal nature [8]