Several papers lead on the growing discontent among the Conservative party over Brexit.
The Sunday Telegraph says government sources are concerned that civil servants who opposed Britain's withdrawal from the EU have "taken control" of the agenda and are "forcing a weak prime minister into a soft Brexit".
A cabinet source is quoted as urging Theresa May to "rein in" the cabinet secretary, Sir Jeremy Heywood, and Europe adviser, Oliver Robbins.
In response, Downing Street insisted Mrs May had "set the direction of Brexit negotiations" and was supported by a "very able civil service".
"Tories in Turmoil" is the headline in the Sunday Times, as it reports on the latest salvo in the battle to succeed Theresa May.
It describes how leading Tories have "traded blows" over the defence secretary Gavin Williamson's comments about the threat of a Russian cyber attack.
Friends of Mr Williamson say claims it was an attempt to distract attention away from his personal life are part of a smear campaign to "derail" his plan to become the next party leader.
According to the Sunday Telegraph, ministers are preparing to "water down" the EU Withdrawal Bill to minimise the number of defeats they face in the House of Lords.
They are said to believe that offering their own amendments - ahead of the first Lords debate of the Bill on Tuesday - will "foster an image" that the government is "listening to peers".
The Mail on Sunday publishes lengthy extracts of Piers Morgan's interview with President Trump - to be broadcast on ITV - in which he states he would have adopted a "different attitude" towards negotiating Brexit.
Mr Trump complains that he has "had a lot of problems with the EU" and what he calls its "unfair" trade policies, warning that could "turn out to be very much to their detriment".
The Sunday Telegraph suggests Cambridge University could be about to adopt an American-style method of awarding degrees to address concerns about grade inflation.
The university's pro-vice-chancellor tells the paper that academics are dissatisfied with the "blunt tool" that is the current system - and believe the continual assessment of the grade point average system could be the answer.
A report last year found that 27% of universities in the UK were examining the idea.
And a broke Boris Becker has swapped doubles tennis for double glazing, according to the Sun on Sunday, by signing up to advertise a German window firm as he tries to pay off his debts.
It says the three-time Wimbledon champion is also considering personal appearances at dinner parties if the money is right.