The mission of SEA is to ensure that Swaziland's development is environmentally, economically and socially sustainable, by means of promoting sound environmental policies, practices and development, which meets appropriate national and international standards.
A number of publications are for download. [according to site editor's information]
SACU, the oldest customs union in the world, has five member states: Botswana, Lesotho, Namibia, South Africa, and Swaziland. It maintains the free interchange of goods between member countries and provides for a common external tariff and a common excise tariff to this common customs area. [editors ilissAfrica]