Synonym of BESIEGE

Acquire : buy or obtain (an asset or object) for oneself.
Attack : take aggressive military action against (a place or enemy forces) with weapons or armed force.
Seize : take hold of suddenly and forcibly.
Surround : be all round (someone or something).
Besiege : surround (a place) with armed forces in order to capture it or force its surrender.

Synonym of Besiege is Surround