his term refers to a military action in which a location is surrounded and defeated by force, usually over a prolonged period of time.

Siege.

Explanation:

A siege is a strategy in which a military force surrounds its enemy forming a military blockade with the intention of getting ready for well-planned attack or wearing it down by cutting all its supply lines. If the second option is taken, then wearing down the enemy can take a prolonged period of time, but this is often preffered as this is the safest choice to fight assuring the least number of loss.

this term refers to a siege, in which a force is surrounded and usually takes a while to conquer.