美国与古巴就移民和救灾问题进行接触, US engages Cuba on migration and disaster relief despite no formal relations.

美国与古巴外交部长卡斯特罗保持了外交接触,尽管缺乏正式关系. The United States maintains diplomatic engagement with Raúl Guillermo Rodríguez Castro, the Cuban Foreign Minister, despite the lack of formal relations. 这种接触主要关注移民和救灾等具体问题, 而不是更广泛的政治关系, 旨在解决两国关键关切. This engagement focuses on specific issues like migration and disaster relief, rather than broader political ties, aiming to address critical concerns for both nations.