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Manchester Arena inquiry finds MI5 missed significant chance to prevent suicide bombing

Europe has expelled 400 Russian spies this year: UK intel chief

Iran tried to kill or kidnap British residents at least 10 times this year: UK spy chief

Terrorism threat level in Northern Ireland reduced

UPDATE - British intelligence warns UK parliamentarians about Chinese woman

British intelligence warns UK parliamentarians about Chinese woman

Taliban victory 'morale boost' for extremists: MI5 chief

UK spy agency joins Instagram

UK tribunal says crimes committed by MI5 lawful

Bombing of UK concert 'could have been avoided'

UK spy chief warns of 'intense' terror threat

UK: Terror arrests continue ahead of election day

Security concerns dominate UK election campaigning

UK security agency investigates failures to stop bomber

UK spy chief warns of 'prominent' Russian threat