Borg Elimination Incident

The Borg elimination incident occured in mid-2384.

Background
After several attempts by the Borg to invade the Federation over the past few years, the Federation decided to fight back and developed a nano-virus which would eliminate all collective connections by self-destructing the Vinculum, the connection device, in the center of each Borg vessel. This would disrupt the drones' individual connections and leave each drone dead. In addition, the explosion caused by the Vinculum's destruction would blow up each vessel.

Opportunity
In 2384, the Borg attacked the Alliance through a newly built Transwarp Hub inside a small nebula. Starfleet decided that this would be the perfect opportunity to destroy all Borg in existance because the Transwarp Hub's connections would allow the nano-virus to be sent through each transwarp appature.