Organisation of Eastern Caribbean States

The OECS was created on 18 June 1981, with the Treaty of Basseterre, which was named after the city of the same name, the capital city of St. Kitts and Nevis. The OECS is the successor of the Leewards Islands’ political organisation known as the West Indies Associated States (WISA).
One prominent aspect of the modern day OECS economic bloc has been the accelerated pace of trans-national integration among its member states.
All of the members-states of the OECS are either Full or Associate members of the Caribbean Community and were among the second batch of countries that joined the CARICOM Single Market and Economy (CSME)