BSDA is a business-to-business event dedicated to the defense and aerospace industry, national and private security. EXHIBITION LOCATION Bucharest, Romania Romania is a republic in Southeast Europe which borders the Black Sea, Bulgaria, Ukraine, Hungary, Serbia, and Moldova. Its capital and largest city, Bucharest, is the sixth largest city in the EU. Located in the southeast of the country, Bucharest is the largest city of Romania, as well as its cultural, industrial, and financial centre.