The US military has launched cruise missile strikes to knock out three coastal radar sites in areas of Yemen controlled by Houthi rebel forces, in retaliation for missile attacks at its Navy ship.
Thursday's strikes, authorised by President Barack Obama, represent Washington's first direct military action against Houthi-controlled targets in Yemen's conflict.
The Pentagon said the strikes were aimed at radars that enabled the launch of at least three missiles against the US Navy destroyer USS Mason since Sunday.
US officials, speaking on condition of anonymity, said US Navy destroyer USS Nitze launched the Tomahawk cruise missiles around 4am local time (01:00 GMT), according to Reuters news agency.
"These radars were active during previous attacks and attempted attacks on ships in the Red Sea," including the USS Mason, one of the officials said, adding the sites were in remote areas where the risk of civilian casualties was low.
The US official identified the areas in Yemen where the radars were targeted as near Ras Isa, north of Mukha and near Khoka.
Rebels' denial
The missile attacks on the USS Mason - the latest of which took place earlier on Wednesday - appeared to be the Houthis' response to a suspected Arab coalition strike on mourners gathered in Yemen's Houthi-held capital Sanaa.
But Houthi rebel fighters and allies on Thursday denied the accusations that they had targeted the USS Mason, according to AFP news agency.
"Those claims are baseless," the Saba news agency quoted a military official allied with the rebels as saying. "The [rebel-allied] army and the Popular Committees [armed group] have nothing to do with this action."
The missile incidents, along with an October 1 strike on a vessel from the United Arab Emirates, add to questions about the safety of passage for military ships around the Bab al-Mandeb Strait, one of the world's busiest shipping routes.
The Pentagon warned against any future attacks.
"The United States will respond to any further threat to our ships and commercial traffic, as appropriate," Cook said.
The conflict between Yemen's government and Houthi rebels escalated last year with the intervention of an Arab coalition in support of President Abd-Rabbu Mansour Hadi.
The UN says more than 6,700 people have been killed and more than three million displaced by fighting in Yemen since March 2015, when the coalition launched its campaign.
Tesco is refusing to sell dozens of Unilever products on its website due to a row over price rises, according to reports.
The supermarket giant has apparently rejected a Unilever request to increase prices by up to 10% because of the fall in the value of Sterling.
The pound has fallen 17% since June's vote for Britain to leave the European Union.
Unilever is one of the world's biggest manufactures of consumer products, making dozens of household brands including Ben & Jerry's ice cream, Marmite, Dove soap and Signal toothpaste.
Image Caption:Marmite, Ben & Jerry's ice cream and Comfort fabric conditioner are all out of stock on Tesco's website
Many of these products are showing as being unavailable on Tesco's website, but the supermarket giant says it will still continue to sell existing supplies in its stores until they run out.
A spokesperson for Tesco said: "We are currently experiencing availability issues on a number of Unilever products. We hope to have this issue resolved soon."
Image Caption:Tesco chief executive, Dave Lewis
Tesco's chief executive, Dave Lewis, spent much of his career working at Unilever before jumping ship to join the supermarket giant two years ago.
Sky sources have confirmed that other supermarket chains have also expressed concerns about Unilever's stance.
Amazon has launched a paid music streaming service in the US to rival Spotify and Apple Music.
Amazon Music Unlimited will have access to tens of millions of songs, and it will be cheaper than its biggest rivals for members of its Prime service and owners of its Echo speaker.
It is expected to be rolled out in the UK, Germany and Australia later this year, although Amazon has not yet released a definite timeline.
The service will cost $3.99 (£3.25) a month for owners of its Amazon Echo speaker and $7.99 (£6.52) a month for Amazon Prime members.
Everyone else will have to pay $9.99 (£8.15) a month, the same charge as US subscribers to Spotify and Apple music.
Image Caption:The Amazon Echo, which responds to voice commands
Amazon will continue to offer Prime members a limited streaming service for free.
The tech giant is pinning a lot on the Echo system, a smart speaker that responds to voice commands.
Steve Boom, vice president of Amazon Music, said: "The first phase of growth (in music streaming) was driven almost entirely by smartphones.
"We believe pretty strongly that the next phase of growth in streaming is going to come from the home."
The launch comes as the way people listen to music is changing.
During the first half of 2016, digital purchasing of single tracks was down 24% and digital albums were down 18%, while streaming was up 59% compared with the same period a year ago.
Image Caption:AI will be used to help fans find the latest release by artists like Adele
Amazon has also worked Artificial Intelligence into its Echo system, so users can request songs that fit a particular mood or can search for a song via lyrics.
Amazon Echo works through the Alexis voice system, which has been refined for the new music service.
"Even something like playing a new song, that's not easy," said Mr Boom. "If you say, 'play Adele's new single,' it's now the third single off the album.
"All the songs have the exact same release date, so we had to train Alexa to get smarter about looking at songs that are rising the charts and are the newest songs being played on the radio."
Kintan Brahmbhatt, director of Amazon Music, said: "You can ask for Michael Jackson by saying, 'Play music by the King of Pop.'
"It's smart enough to know that's what you meant."
An Australian town wants to install shark nets to protect swimmers and surfers after a second suspected attack in two weeks.
Seneca Rus, 25, escaped with minor leg injuries after a shark tipped him off his board while surfing at Ballina, some 350 miles north of Sydney.
He described it as a "blessing" that he got away relatively unscathed after Wednesday's incident.
"I was laying on my board and unexpectedly a shark just came up from underneath and knocked me off my board and took a bit of a chunk out of my leg, one of the teeth, and mainly just got the board and the fiberglass.
He added: "I feel very lucky. It's almost like a bit of, I don't know, just a blessing just to have all the limbs still here and one in a million that you'd come out with everything and just a scratch really, not too much."
Mr Rus was treated in hospital and beaches around the area were closed for 24 hours as a precaution.
It comes just a few weeks after a 17-year-old suffered "severe lacerations" after a suspected great white attack off Ballina.
Japanese tourist Tadashi Nakahara, 41, died after losing both his legs in a great white attack at the town's Lighthouse Beach in February last year.
New South Wales state premier Mike Baird is asking the federal government for permission to install the nets along the state's northern beaches for a six-month trial.
He told state MPs it was vital to "prioritise human life over everything" after "extraordinary circumstances" in the Ballina area.
Mr Baird said he would ask the federal government to urgently get the nets installed for a six-month trial.
Environmentalists are against the nets, which are suspended from floats and run parallel to the coast, because they say they are not complete barriers to sharks and kill a wide variety of marine life.
New South Wales has previously been against the nets - which other states use - but the latest attack has made politicians reconsider their position.
So, do you think you are clever? Are you intelligent enough to get into Oxford University?
Famous gifted men and women have studied at the university throughout its history, including Prime Minister Theresa May and her predecessors David Cameron, Tony Blair and Margaret Thatcher.
Others include Foreign Secretary Boris Johnson, physicist Professor Stephen Hawking, authors Oscar Wilde and John Le Carre and actors Emilia Fox, Rosamund Pike and Hugh Grant.
The deadline to apply for courses starting in 2017 is 6pm (UK time) on 15 October, so the university has published a few sample interview questions on its website to give nervous prospective students an insight into the type of questions they might be asked.
For example, students applying for experimental psychology might be asked why research appears to show older siblings have higher IQs than their younger counterparts.
So do you think you've got what it takes? Really? How about we put that to the test?
Here are some sample questions:
:: Subject: Modern Languages (French)
:: Q: What makes a novel or play "political"?
Image Caption:Famous Oxonians Boris Johnson (L) and David Cameron
This is the sort of question that could emerge from a student's personal statement where they have divulged a keen interest in particular works.
It offers them the chance to kick-off the gruelling face-to-face interview on something familiar.
The question would then be broadened. What does one mean in applying the label? What if we said that all art is, in fact, political? And so on.
A strong candidate would show ready willingness and very good ability to engage and develop their ideas in conversation," says interviewer Helen Swift, of St Hilda's College.
"We want people to think flexibly and be willing to consider different perspectives.
"Ideally, they would recognise themselves that they were changing their viewpoint, and such awareness could indicate aptitude for sustained, careful reflection rather than a 'scattergun' effect of lots of different points that aren't developed or considered in a probing way.
"Undoubtedly, the candidate would need to take a moment to think in the middle of all that we expect that "ermmm", "ah", "oh", "well", etc. will feature in someone's responses!"
:: Subject: Medicine
:: Q: About one in four deaths in the UK is due to some form of cancer, yet in the Philippines the figure is only around one in 10. What factors might underlie this difference?
Image Caption:A group of Oxford University graduates
There is no "right" answer to this question, but is aimed at stimulating the sort of discussion that might come up during a tutorial session - and give the interviewer an idea of the candidate's level of problem-solving and critical thinking.
Some candidates will ask clarifying questions about the data and its reliability, others might compare the lifestyles of the two populations.
"Others, especially if they appreciate that life expectancy in the Philippines is substantially lower than in the UK, will realise that other causes of death are more common in the developing world, and that this is the major factor that gives rise to the difference alluded to in the question," says interviewer Chris Norbury, of The Queen's College.
"This probes selection criteria including problem-solving, critical thinking, intellectual curiosity, communication skills, ability to listen and compatibility with the tutorial format."
Subject: Philosophy, Politics and Economics (and other philosophy courses)
:: Q: What exactly do you think is involved in blaming someone?
Image Caption:Prime Minister Theresa May also attended Oxford
Again, there is no "right" answer to this question. Instead, what the interviewer is looking for is whether the candidate can be creative in coming up with examples and suggestions - and can think critically and carefully through their implications.
"Good interviews will often generate all kinds of interesting and revealing discussions that show a candidate's ability for analytical thought," says interviewer Ian Phillips, of St Anne's College.
"For example about self-blame, cases of blame where the blamer knew the blamed had done nothing wrong, and indeed cases of blaming something inanimate (such as a faulty printer or phone)."
:: Subject: Maths
:: Q: Imagine a ladder leaning against a vertical wall with its feet on the ground. The middle rung of the ladder has been painted a different colour on the side, so that we can see it when we look at the ladder from the side on. What shape does that middle rung trace out as the ladder falls to the floor?
Image Caption:Professor Stephen Hawking is another Oxford graduate
This question tests whether you can do what mathematicians do, which is to abstract away all the unimportant information and use mathematics to represent what's going on.
Candidates may want to sketch the ladder - but their drawing is unlikely to be spot on, in terms of accuracy, without a ruler. So they will have to fall back on maths and try to work out the answer using equations.
"This is a fun question because the answer is typically the opposite of what they expect because they think about the shape the ladder makes when it falls," says interviewer Rebecca Cotton-Barratt, of Christ Church.
Do you know the answer? Read on if you want to know.
You'll need Pythagoras' Theorem to work out that it forms ... a quarter circle centred on the point where the floor meets the wall.
David Cameron has accepted his first job since quitting as Prime Minister following the Brexit vote.
The 50-year-old, who resigned in June after six years in Number 10, has taken an unpaid role at the National Citizens Service Trust.
The charity implements his flagship Big Society policy, helping 15 to 17-year-olds take part in volunteering and social development bootcamps.
Writing in The Daily Telegraph, Mr Cameron said: "When I look back over six years as Prime Minister, one of my proudest achievements is the creation of National Citizen Service.
"I often get stopped in the street by parents who tell me what a difference NCS has made in the lives of their children; and I regularly receive letters from young people who have so enjoyed taking part.
"From the pilot projects that I began as Leader of the Opposition to the full-scale programme that we have today, more than 275,000 people have taken part in what has become the fastest-growing youth movement of its kind in the world."
Mr Cameron is set to become the chairman of the charity's patrons board, which will oversee expansion plans.
He added: "I am delighted that my first role in my life after politics is to continue my association with this fantastic programme by becoming chairman of NCS Patrons, bringing together a senior cross-party and cross-sector group of patrons and ambassadors who can help NCS to reach more youngsters."
One in six families say they have been denied mortgages or offered smaller loans because of their childcare costs.
Of those, 68% have attempted to conceal their true monthly expenditure on childcare in an attempt to secure a better deal from lenders.
Some relied on friends and family to look after their children temporarily, artificially reducing their outgoings to deceive banks during affordability checks.
uSwitch.com compiled the research, with a spokeswoman saying: "It's worrying that many feel under pressure to conceal these costs during the mortgage application process, as this may have a severe impact on their ability to make repayments in future."
The price comparison website also uncovered inconsistencies in the application forms sent out by lenders to determine a family's eligibility.
Only 39% of borrowers were asked whether their childcare costs would decrease in the coming years, while 41% said their lender did not take the ages of their kids into account.
Mortgage rules have become stricter in recent years, meaning many lenders now take childcare costs into consideration when deciding whether to offer applicants a loan.
The changes were designed to ensure borrowers can truly afford to make repayments even if interest rates rise.
A recent report from the Organisation for Economic Co-operation and Development found the typical British family spends about a third of its monthly income on childcare.
The Council of Mortgage Lenders said: "The mortgage market review means that lenders must take into account all the key financial commitments of borrowers.
"That could mean that those who have to pay for childcare may not be able to borrow as much as others with a similar income who do not have these commitments."
