The island of Cuba.
The island of Cozumel.
Cuba is.
Cuba
Havana, capital of the island-nation of Cuba, is located east of Mexico City, at a bearing of 73.7° east-northeast.
No, Mexico is not an island nation. Mexico is not surrounded by water on all sides, whereas an island is apiece of land that has water on all sides.
Bahrain is an island nation in the Middle East
No the Dominican Republic is not in Mexico. It is its own nation and is situated in the Caribbean on the island of Hispaniola, east of Haiti.
The island nation east of Florida is the Bahamas.
New Zealand is the closest island nation east of the city of Melbourne. However, it is approximately 2300 km away.
Japan.
Indonesia
Malaysia.
Seychelles
The island of Cozumel, east of the Yucatan peninsula.
Philippine Islands are the closest internationally recognized island-nation to Japan. However, Taiwan is the closest island-nation to Japan (it is only recognized officially by 23 countries).