Siege, Encirclement
noun, verbal noun, の adjective
Wrap and surround them. We are going to siege the enemy. This is encirclement around their base!
ほうい
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
その建物はじきに警察に包囲されるでしょう。
The building will be surrounded by the police in a moment.