UK Foreign Secretary Liz Truss has summoned the French ambassador in London for talks on Friday as tensions between the two countries over post-Brexit fishing rights in the English Channel intensified. The latest development comes after France seized one UK trawler and fined another after checks on Thursday. Paris says the detained boat did not have a licence to fish in its waters, but London insisted the EU had granted it the proper paperwork. The French have accused the British of breaking the Brexit deal by denying licences for its boats to fish in UK waters and are threatening to retaliate if the dispute is not settled by next Tuesday. Measures France is considering include carrying out more checks on UK goods and cutting electricity supplies to Jersey. For its part the UK says France's actions are "unjustified" and "not compatible" with the deal agreed with the EU.
Back in January, our Reality Check team looked at the issue of fishing rights in the Channel and the agreement with the EU which means boats from the bloc can still fish in UK waters for some years to come - in exchange for British fishermen getting a greater share of the catch.
And if you're curious to learn what it means to summon an ambassador - well, you can read more about that too.

In what would be a world first, the NHS in England looks set to prescribe e-cigarettes to help people stop smoking. The UK's medicines watchdog has asked manufacturers to put their products forward for approval - and they would have to pass more vigorous tests than those needed for them to be sold in shops. Using e-cigarettes is not completely risk-free - while they do not produce harmful tar or carbon monoxide, the vapour does contain some potentially dangerous chemicals but at much lower levels than in tobacco smoke. E-cigarettes are the most popular choice for smokers wanting to quit, with one in four relying on them. But one expert has questioned whether it makes sense for the NHS to pay for something that smokers are happy to buy for themselves. We've written previously about the safety of vaping and e-cigarettes.

Terminator actor Arnold Schwarzenegger did not mince his words when he met the BBC ahead of next week's COP26 climate change summit. The former Republican governor of California says those who believe cutting carbon emissions damages economies are "liars" and "stupid". He points to the efforts of his own state which enjoys continuing economic success while reducing the amount of carbon dioxide it pumps into the air. In a wide-ranging interview for 39 Ways to Save the Planet on Radio 4, Schwarzenegger also says he has cut the amount of meat he eats and converted his diesel Hummer car to battery power. And what is the most important thing Arnie thinks we can do to cut carbon? "Buy local products. Every time you buy something from overseas, that is evil for the environment - this is like the worst thing you can do," he says.
We've got a range of features and explainers to read ahead of COP26, including what it is and why it's important and four things you can do about your carbon footprint.

The row over post-Brexit fishing rights sees the Metro and Daily Star suggest the spat is a "kick in the scallops" for British fishermen. Elsewhere the Daily Mail, Guardian and Daily Express lead on plans to prescribe e-cigarettes on the NHS - with the latter saying the move could save lives. The Times and FT both report that mortgages are going to become more expensive following Wednesday's Budget. Some of Britain's biggest lenders, including HSBC, Barclays and NatWest are already increasing rates because of fears over inflation. There's more from the front and inside pages in our paper review.

Oliver and Alexander Kent-Braham are the 29-year-old twins who wanted to shake-up insurance, but all they had to go on was an idea and the foyer of a gym for an office. Despite those lowly beginnings - and starting out with no capital and no clients - their firm, Marshmallow insurance, is now a unicorn - meaning it is valued at $1bn (£727m).
Pop star Ed Sheeran's fourth album = (equals) is out today - and our music correspondent Mark Savage has been giving it a listen. In his view it's polished and balances "Sheeran's ruthless commercial instincts with more introspective, emotional moments".

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