interdiction

(ordnance) The prevention or destruction of, or interference with, enemy movements, communications, and lines of communication, as by gunfire, shelling, or bombing.

noun

1. A refusal to allow: ban, disallowance, forbiddance, inhibition, prohibition, proscription, taboo. See allow/prevent.
2. A coercive measure intended to ensure compliance or conformity: interdict, penalty, sanction. See reward/punish/deserve.

Interdiction is a general term for isolating a part of the battlefield or theatre of war to prevent the enemy reinforcing his troops there. It is also used more specifically of artillery fire with this aim, which may take place along the sides of a planned operation or deep behind the enemy, and may use smoke, chemical weapons, or remotely delivered mines as well as high explosive to achieve the effect.

The classic example was the Allied air attacks on the French rail network in 1944 to interdict German troop movements that might interfere with the Normandy landings. Another was given by Gen Colin Powell, summarizing the strategy to be employed against the Iraqi army in the Gulf war: ‘We're going to cut it off, then we're going to kill it.’ Interdiction was accomplished by air attack on routes into the theatre, particularly the destruction of bridges over the Euphrates. The air attacks on the former Yugoslavia in 1999 were similarly an interdiction operation, designed to cut off federal Yugoslav forces in Kosovo from resupply and make their political leadership decide to cut its losses and withdraw them.

— Christopher Bellamy

(DOD) An action to divert, disrupt, delay, or destroy the enemy's surface military potential before it can be used effectively against friendly forces. See also air interdiction.

The noun has 2 meanings:

Meaning #1: authoritative prohibition

Meaning #2: a decree that prohibits something
  Synonyms: prohibition, ban, proscription