Days after the US withdrew troops from northern Syria, Turkish forces have entered the war-torn nation in an assault on territory held by Kurdish-led forces. But US Secretary of State Mike Pompeo insists Donald Trump did not give a "green light" for the offensive. Critics accuse the president of having "shamefully abandoned" Kurdish fighters who had been key allies in the fight against Islamic State extremists.
Calling its operation Peace Spring, Turkey insists its aim is to "prevent the creation of a terror corridor" along the border with Syria by creating a "safe zone" cleared of Kurdish militias. It considers much of the rebel force an extension of a banned group which has fought for Kurdish autonomy in Turkey for three decades. Kurdish authorities have urged people to "head to the border... to resist". Read more about their long enmity.
Turkey says its troops and Syrian rebel allies have entered the area "east of the Euphrates". Our maps help explain what's going on. The result is yet more chaos for civilians, with the International Rescue Committee suggesting the offensive could displace 300,000 people. Several towns and villages were hit by air strikes and artillery fire on Wednesday, forcing thousands to flee their homes.

Could it be curtains for the buffet car? Banning snacks on public transport is just one way England's departing chief medical officer, Dame Sally Davies, reckons the government could act to prevent childhood obesity. Others include tobacco-style plain packaging for junk food, a calorie cap for restaurant meals, adding VAT to products like cakes, and banning advertising of unhealthy food. If the measures sound extreme, so do the figures. The proportion of children deemed obese by their final year of primary school has quadrupled since 1990, with about a third of all year six pupils classed as overweight or obese. The health secretary says ministers will study the recommendations "closely". But the railway trolley of drinks and light refreshments might be around for a while yet. Prime Minister Boris Johnson has previously expressed scepticism about measures such as so-called sin taxes.

With just three weeks until the UK is due to leave the EU, Irish Prime Minister Leo Varadkar maintains it will be "very difficult" to secure a Brexit deal before the deadline. We'll find out later whether his "cautiously optimistic" British counterpart can change his mind when the two men meet in north-west England. Boris Johnson insists the UK will leave on 31 October with or without a deal, while Business Secretary Andrea Leadsom says the government is exploring ways of bypassing a law imposed by Parliament to force the PM to ask for a further postponement.
A "Super Saturday" session of Parliament fixed for 19 October could prove the decisive session, says BBC political editor Laura Kuenssberg. Meanwhile, former Foreign Secretary Jeremy Hunt is warning EU foreign ministers to avoid a "catastrophic failure in statecraft" over Brexit resulting in no-deal. And Newsbeat has been asking what happens to Britons' rights to free healthcare in Europe if no deal is secured.

The Guardian uses a striking yellow tint as the background to a special investigating claiming to reveal 20 companies that have contributed to a third of all global carbon emissions. The red tops enjoy the row between footballers' wives Coleen Rooney and Rebekah Vardy over alleged Instagram impropriety. Others focus on Brexit-related stories and England's departing chief medical officer suggesting snacks should be banned on public transport in an effort to combat childhood obesity. Read the full review.

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