MI6 chief Sir John Sawers said the leaks from NSA whistleblower Edward Snowden "have been damaging and put operations at risk." The heads of Britain's intelligence agencies were questioned by MPs in public for the first time.
MI5 has disrupted 34 terrorist plots "at all sizes and stages" since the 7/7 bombings in London in 2005, Andrew Parker told the committee.
"The vast majority come from people who live here."
The Democratic presidential candidate may also have shown his cards on his choice of running mate.
The US president also shared a post on Twitter accusing Dr Anthony Fauci of misleading the public over hydroxychloroquine.
Fears over an impending second wave of coronavirus dominates Wednesday’s front pages.