John Brennan says he was aware of contact between Russians and “US persons in the Trump campaign”.
The US president reportedly called the former FBI chief James Comey a “real nut job”.
The press secretary also denies Mr Trump is making surreptitious recordings in the White House.
The White House says he was sacked for botching the Clinton email probe, but critics see a cover-up.
The US defence secretary says the US is working with China to reduce tensions.
The Chief Rabbi condemns the decision not to expel Ken Livingstone from the party.
The FBI chief has rejected President Trump’s claim that Barack Obama tapped his phone, reports say.
People viewing indecent images of children should be rehabilitated, says chief child protection officer.
Cressida Dick becomes the first woman to lead London’s police force in its 188-year history.
The new US defence secretary’s warning comes as he also insists Nato is a “fundamental bedrock”.