Tại sao quan hệ Cuba - Mỹ nguội dần?
GD&TĐ - Năm ngoái, Tổng thống Mỹ Barack Obama đã có chuyến thăm lịch sử tới Cuba, kết thúc hơn nửa thế kỷ thù địch giữa hai nước. Ngay sau đó, 7 hãng hàng không Mỹ bắt đầu hoạt động tại các thành phố của Cuba, các công ty du lịch bắt đầu gửi tàu ra hòn đảo tự do...
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