MI5 and MI6, the secret intelligence service, have a long history of handling rogue agents and rogue officers. Anthony Blunt, Kim Philby, David Shayler and Northern Ireland double agent ...

How the historical analogy of Munich applies to the Ukraine war and how to deal with Russian President Vladimir Putin.

The Ukrainian leader says he will travel to Saudi Arabia where talks on bringing a "lasting" peace will take place.

MI5 was still investigating a vulnerable teenage girl until her death even after terrorism charges were dropped, an inquest has heard. Rhianan Rudd, from Bolsover in Derbyshire, was the youngest ...

A member of MI5, who leads counterterrorism teams, has told an inquest how the security service continued to investigate Rhianan Rudd until her suicide in a care home, aged 16. The man ...

She was investigated after threatening to blow up a synagogue - but the charges were dropped when it was revealed she had been groomed and exploited.

MI5 is helping establish the extent to which the use of Chinese technology such as solar panels or industrial batteries could pose potential future security threats, according to people close to ...