Trinidad and Tobago is a republic within the Commonwealth of Nations, comprising the southernmost of the Caribbean islands, namely, Trinidad and Tobago and adjacent islets situated off the coast of Venezuela. Trinidad is situated north of and opposite the mouth of the Orinoco River and is separated from the South American coast by the Gulf of Paria. Tobago is 32 km (20 mi) northeast of Trinidad. Area of Trinidad is 4828 sq km (1864 sq mi), the area of Tobago is 300 sq km (116 sq mi) giving a total area of 5128 sq km (1980 sq mi).