US government secures release of Otto Warmbier, convicted after a one-hour trial

James Comey’s sacking is victory for Russia, claims ex-intelligence chief James Clapper

Republican senator urges president to back up allegations or admit he was wrong

US president urged to ‘put up or shut up’ after accusing Obama of ordering wiretap

US President claims Obama tapped phones at Trump Tower during 2016 election

James Clapper says he had no evidence of collusion between Trump team and Russians

Fears that new president could seek to limit inquiries into Russian hacking once in office

US president-elect rejects allegations that Russia has damaging information about him

Former officials react to US president-elect’s ‘hysterical hostility’ over Russia dossier

Security officials tell Congress of concerns about Moscow despite Trump’s skepticism

Controversial former general Michael Flynn installed as national security adviser

US accuses Russian government of stealing and disclosing emails from the Democratic National Committee

Barack Obama warns ‘grave differences’ remain between the two superpowers

US officials say Kremlin spies also targeted computer network of Hillary Clinton

Algerian-Irish citizen profiled in Islamic State documents leaked by defector last month

Isis files obtained by media reveal an evolving organisation learning from past mistakes

Pyongyang could begin to assemble a plutonium stockpile ‘within months’ as pressure mounts

Intelligence chief says dictatorship restarted reactor that could recover plutonium ‘in weeks’

Egypt dismisses Islamic State claims of attack on crashed Russian aircraft as ‘propaganda’

Unlikely aircraft brought down by Isis but intelligence expert adds: ‘I wouldn’t rule it out’