The Mail on Sunday leads with a leaked memo to Theresa May from Boris Johnson and Michael Gove – in which they urge her to show more resolve in handling Brexit.
The paper says the two men told the prime minister of their concern that in some parts of government, preparations are not proceeding with anything like sufficient energy.
The Mail, which opposed Brexit, describes the memo – sent a month ago – as “menacing” and “patronising” and accuses Mr Johnson and Mr Gove of trying to hold Mrs May to ransom.
Mr Johnson is the subject of what is described as a “blistering attack” in the Observer.
It comes from the Labour leader, Jeremy Corbyn, who calls on the PM to sack the foreign secretary for, as he puts it, “undermining our country” and “putting our citizens at risk”.
He has “not learned to be diplomatic or represent our country”, writes Mr Corbyn, adding: “It’s time for Boris Johnson to go”.
Mr Gove has written an article for The Sunday Telegraph in which he promises a “green Brexit”.
The environment secretary reveals plans to set up what he describes as a “world-leading” statutory body, which he says will have powers that go beyond European standards.
According to The Sunday Times, there is “turmoil” in the Tory party, with plotters claiming that 40 rebel MPs are willing to sign a letter of “no confidence” in Mrs May – eight short of the number required to force a leadership challenge.
In an article for the same paper, Mr Corbyn says the PM is too weak to deliver Brexit – and she should “govern or go”.
Lib Dem leader Sir Vince Cable has told The Independent that peers across the House of Lords are ready to join forces and inflict defeats on the government in what he describes as “amendments of substance” over Brexit.
Fishing for jobs
The main headline in the Sunday Express heralds the “rebirth of our fishing ports“.
Fishing industry leaders have apparently predicted that Brexit will revive the UK fishing industry, creating 30,000 extra jobs and regenerating seaside towns.
The boost to the nation’s economy is put at almost £3bn, with long-neglected ports such as Lowestoft, Grimbsy and Whitby given a new lease of life, along with Cornish coastal towns and resorts.
Papers in Vietnam show pictures of crowds lining the streets to catch a glimpse of President Trump during his visit to Hanoi.
One of the biggest-selling titles is Tuoi Tre, which has close links to the ruling Communist Party.
It describes Mr Trump’s visit as “the most exciting moment in US-Vietnam relations”.
The online news site, Vietnam.net, says Vietnam attaches great importance to developing relations with the US and is willing to cooperate with the Trump administration.
It says the two countries will work together, contributing to the maintenance of peace and stability in the region and the world.
Spacey’s royal seat
According to The Sunday Times, disgraced Hollywood actor Kevin Spacey once paid a private visit to Buckingham Palace – during which he allegedly had pictures taken of him sitting on one of the thrones reserved for the Queen and the Duke of Edinburgh.
The incident is said to have happened during a private tour with the Duke of York, when Mr Spacey was artistic director of the Old Vic theatre in London.
Sources close to Prince Andrew say he has no recollection of giving Mr Spacey a tour.
The paper says the alleged incident would be a significant breach of protocol, or, as a “palace insider” puts it, “going anywhere near the thrones is a total no-no”.