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A COMPREHENSIVE SERIES OF ARTICLES ON THIS TOPIC

<p>The Saoradh Easter Rising March on Easter Monday. The hardline republican group has been left reeling after revelations that a second person linked to the party was allegedly working for British intelligence. Picture: Alan Lewis</p>

news

Republican group hit after second British 'mole'

The man, who disappeared several days ago, is connected with a person closely associated with Saoradh

Instagram will be used to bust myths about MI5, reveal previously unseen archive content, as well as career opportunities (Nick Ansell/PA)

technology

MI5 joins Instagram in bid to lift lid on Secret Service’s work

<p>The scene close to Manchester Arena after the terror attack at an Ariana Grande concert (Peter Byrne/PA)</p>

world

Terrorists look for different targets as coronavirus cuts crowds, new MI5 boss warns

National security office urged in Policing Commission report

news

National security office urged in Policing Commission report

Terrorist plots escalating to violence within days, says MI5 chief

world

Terrorist plots escalating to violence within days, says MI5 chief

Britain faces ‘high risk’ of IS terrorism

world

Britain faces ‘high risk’ of IS terrorism

UK Northern Secretary tightlipped about Provisional IRA's Army Council

UK Northern Secretary tightlipped about Provisional IRA's Army Council

The UK's Northern Secretary Theresa Villiers is refusing to say whether or not she knows who is on the Provisional IRA's Army Council.

Wed, 21 Oct, 2015