defusal

The act or process of making safe an explosive device (for example, a bomb, mine, or improvised explosive device), as by removing, disabling, or neutralizing its fuse, detonator, etc.

It will allow for the safe defusal of the 1,400kg British bomb.

...a simulated underwater mine defusal range...

The act or process of calming, de-escalating, or otherwise making a potentially dangerous, volatile, or tense situation less dangerous or tense.

...press India for de-escalation and the defusal of tensions...

...lists defusal of the conflict between science and religion first among the three main objectives...

A particular instance or operation of defusing, especially an explosive device.

Bomb defusals are common in Cologne...