Which nation listed is the closest in size to the U.S. state of Delaware?

Brunei is a tiny nation on the island of Borneo; it has two distinct sections surrounded by Malaysia and the South China Sea. It is the nation listed that is the closest in land area to the U.S. state of Delaware. They are at least both more than 5,130 square kilometers or 2,226 square miles in total area size.

Brunei is a place known for its beaches and biodiverse rainforest, much of which is protected within reserves. The capital, Bandar Seri Begawan, is home to the opulent Jame’Asr Hassanil Bolkiah mosque and its 29 golden domes. The capital's massive Istana Nurul Iman palace is the residence of Brunei’s ruling sultan.

Also, Brunei has 161 kilometers (100 mi) of coastline next to the South China sea, and it shares a 381 kilometers (237 mi) border with Malaysia. It has 500 square kilometers (193 sq mi) of territorial waters, and a 200-nautical-mile (370 km; 230 mi) exclusive economic zone.