Siege
… speaking, siege warfare is a form of constant, low intensity conflict characterized by one party holding a strong, static defensive position. Consequently, an opportunity for negotiation between combatants is not uncommon, as proximity and fluctuating advantage can encourage diplomacy.
Synonyms of siege
verb: besiege, beleaguer; noun: blockade, investment; plural: blockades, investments; related terms: beleaguering, besieging, military blockade, encirclement, armed forces, armed …