ANALYSIS: Will the agent Stakeknife talk?

Security journalist Brian Rowan gives his thoughts on the latest developments in the Stakeknife investigation.

At a news conference back in June, Jon Boutcher said the truth will be a "difficult and elusive prey".

He is investigating a series of IRA killings - executions of suspected informants.

Operation Kenova will examine the alleged role of the agent Stakeknife.

Was an agent working for the Army inside the IRA involved in the interrogation and torture of other suspected agents often leading to their deaths?

How will the military explain and justify that role?

This is an investigation that will examine aspects of the so-called dirty war - an investigation that is likely to come up against the intelligence secrets of national security as well as the silence of the IRA.

Boutcher will want to interview Stakeknife - but will the agent talk?