Bombing of Kelvin Memorial Archive

"By now, some of you have heard what happened in London. The target was a Starfleet Data Archive, now it's a damn hole in the ground, 42 men and women are dead. One hour ago, I received a message from a Starfleet officer who confessed to carrying out this attack, that he was being forced to do it by this man: Commander John Harrison. He's one of our own, and he's the man responsible for this act of savagery. For reasons unknown, John Harrison has just declared a one-man war against Starfleet, and under no circumstances are we to allow this man to escape Federation space. You here tonight represent the senior command of all the vessels in the region, and in the name of those we lost, you will run this bastard down. This is a manhunt, pure and simple, so let's get to work."

- Admiral

The Bombing of Kelvin Memorial Archive was a terrorist attack carried out by former officer/Section 31 agent, Commander "John Harrison" against the Federation.

Prelude
Following the destruction of Vulcan in 2258, Starfleet and Section 31 under Admiral began to search for ways to militarize Starfleet and defend the Federation from threats. The USS Vanguard (Section 31) discovered the sleeper ship, SS and it occupants. Among it's occupants, was the Great Khanate's augment dictator, Khan Noonien Singh. Section 31 discovered and revived only Khan. They had Khan surgically altered to appear as a Englishman in Starfleet working at the Kelvin Memorial Archive under the name "John Harrison".

In his role as Harrison, Khan was able to develop a new top of long-range torpedoes. He was also able to improve Io Facility's computer systems and the USS Vengeance (alternate reality)'s warp drive. Following his to Praxis, Khan then started to remember his true identity. He then discovered his crew's location and attempted to smuggle them in his torpedoes. He then confronted Admiral Marcus about this. However, Marcus and Section 31 discovered his crew and threatened to terminate them. Marcus then called in two jumpships to apprehend Khan. However, Khan escaped and believed that Marcus had killed his crew. Khan then went to London.

The bombing
Khan then planned his revenge on Marcus, the Federation, and Starfleet. Khan was able to coerce Starfleet/Section 31 Lieutenant Thomas Harewood to carry out the bombing by giving him a cure to his daughter's terminal disease. Khan then gave Harewood a explosive disguised as a Starfleet Academy class ring.