Elon Musk says if his bid to buy Twitter is successful he will reverse Donald Trump's ban from the platform.

The richest man in the world agreed a $44bn (£34.5bn) takeover bid with the Twitter board last month.

But he said it was not a done deal and that ideally it would be completed in the next two to three months.

The Royal Mail wants a fleet of 500 drones to help deliver the mail to remote communities across the UK.

In the next three years it hopes up to 200 drones will help carry the mail on 50 new routes with the Isles of Scilly, Shetland Islands, Orkney Islands and the Hebrides the first to benefit.

A spokesperson for Adidas UK said it stood proudly behind the message which it continued to display on its website.

The tweet was posted in February with the words: "We believe women's breasts in all shapes and sizes deserve support and comfort. Which is why our new sports bra range contains 43 styles, so everyone can find the right fit for them."

Ukraine says its forces have recaptured villages from Russian troops north and north-east of Kharkiv, pushing them back towards the border. The continuing offensive could signal a shift in the war's momentum and jeopardise Russia's main advance further south. BBC correspondent Quentin Sommerville, and cameraman Darren Conway, have been with Ukrainian forces as they advance.

A federal appeals court in California has ruled that the state's ban on the sale of semiautomatic firearms to Americans under 21 is unconstitutional.

In a 2-1 vote, the judges' panel said the law was an "an almost total ban on semiautomatic" rifles for youths.

They found that it violates the Second Amendment to the US Constitution, which guarantees the right to private gun ownership.