The Bay of Bengal Initiative for Multi-Sectoral Technical and Economic Cooperation (BIMSTEC) is a regional organization comprising seven Member States lying in the littoral and adjacent areas of the Bay of Bengal constituting a contiguous regional unity.
It came into being in 1997 through the Bangkok Declaration.
BIMSTEC was initially a four-member states:
Bangladesh
India
Sri-Lanka and
Thailand
Myanmar joined in 1997 & Nepal and Bhutan in 2004
There are five South Asian nations:
Bangladesh
Bhutan
India
Nepal
Sri Lanka
There are two southeast Asian nations:
Myanmar
Thailand