A siege is a prolonged military assault and blockade[?] on a city or fortress[?] with the intent of conquering by force or attrition[?].
Sieges usually involve surrounding the target and blocking the provision of supplies.
... Alenia[?] of Italy (21%), and CASA of Spain (13%).
Over the next five years, design work continued, aided by data from the British Aerospace EAP prototype which had ...