user: Problem: "We don't want to have hard borders between Northern Ireland and the Republic," said Jean-Claude Juncker.
He was speaking after talks in Brussels with Irish Prime Minister (Taoiseach) Enda Kenny. The UK is expected to trigger the Brexit process next month.
Border controls were removed under the 1998 Good Friday peace deal.
But once the UK leaves the EU, the border - heavily policed during the Troubles in Northern Ireland - will become one of the EU's external borders.
Last June a majority of voters in Northern Ireland and Scotland voted to remain in the EU, but the UK Leave campaign won overall because so many in England backed Brexit.
"We want to have the Good Friday agreement not being put under risks, and we want land borders being as open as possible," Mr Juncker said.
A veteran European Commission politician, France's Michel Barnier, will be the EU's chief negotiator on Brexit, and he attended the Juncker-Kenny talks on Thursday.
The Commission and Irish government "will work closely together during the whole process of the Brexit negotiations," Mr Juncker said.
Mr Kenny said Dublin was very concerned by the implications of Brexit and wanted "the closest possible relationship between the UK and the EU".
"There should not be a return to a hard border and there won't be," AFP news agency quoted him as saying.
What was that article about?

A: The European Commission president has said he agrees with the Irish government that Brexit should not bring back a "hard" Northern Ireland border.

Problem: The duchess wrote that she and her husband, the Duke of Cambridge, "would not hesitate" to seek help if their two children needed it.
Her comments marked the launch of the Young Minds Matter editorial series.
US First Lady Michelle Obama said she was pleased Catherine was shining a "bright light on mental health".
The duchess has been guest editing the Huffington Post on Wednesday from a temporary newsroom in Kensington Palace.
Her role has seen her commission blogs, articles and videos from a selection of leading figures on the psychological well-being of children, including a blog from Mrs Obama about a man who suffered mental health problems after leaving the American navy.
The duchess also spent around half an hour in the editorial conference meeting, reviewing the content she had commissioned.
Later she met four children who had been filmed for motivational videos posted on Huffington Post, under the title Real Truth, about why adults should feel comfortable speaking to young people about their mental health.
The duchess, who is a campaigner for mental health and a patron of several related charities, wrote on the Huffington Post that during her work she had seen lives "torn apart, with devastating impacts for all involved, particularly children".
"What I did not expect was to see that time and time again, the issues that led people to addiction and destructive decision-making seemed to almost always stem from unresolved childhood challenges," she wrote.
"It became clear to me that many children - even those younger than five - have to deal with complex problems without the emotional resilience, language or confidence to ask for help.
"And it was also clear that, with mental health problems still being such a taboo, many adults are often too afraid to ask for help for the children in their care."
Catherine called for the stigma surrounding mental health to change and for it to be seen as "every bit as important" as the physical well-being of children.
She said she and the duke would also encourage their children, two-year-old Prince George and nine-month-old Princess Charlotte, to speak about their feelings and seek psychiatric support if they needed it.
"We hope to encourage George and Charlotte to speak about their feelings, and to give them the tools and sensitivity to be supportive peers to their friends as they get older. We know there is no shame in a young child struggling with their emotions or suffering from a mental illness," she wrote.
In a blog post Mrs Obama praised the duchess for being a "passionate voice" for mental health.
She wrote: "The Duchess of Cambridge has been a passionate voice on so many important issues, and I'm grateful that she is using her day as guest editor to shine a bright light on mental health, particularly children's mental health, and on the tens of millions of people who suffer in silence."
The first lady added that getting help should not be seen as "a sign of weakness" but "a sign of strength".
Children's charities said they hoped the duchess guest editing the Huffington Post would be a "turning point" in the way children's mental health is viewed.
What was that article about?

A: Mental health problems should no longer be seen as "taboo", the Duchess of Cambridge has written as guest editor of the Huffington Post UK website.

Problem: The men broke into the house in Rouken Glen Road in Giffnock, near Glasgow, at about 17:30 on Monday.
They made off with cash and jewellery when members of the woman's family arrived at the house.
Two of the men were driven away in a dark grey Volvo driven by a fourth man. The third member of the gang was seen heading towards Eastwood Toll on foot.
The woman they threatened was unhurt but said by police to be "extremely shaken".
Officers are attempting to trace the men, who were all wearing dark clothing.
Det Con Craig Faskin said: "This was an extremely frightening ordeal for this woman who was within her own home and those responsible must be caught.
"Officers are still gathering information on this crime and establishing exactly what was stolen from the house and the exact circumstances surrounding the crime.
"Rouken Glen Road would have been very busy around the time of this robbery and I would urge any witnesses who have not yet spoken to police, or anyone with information that may assist our ongoing investigation to contact Giffnock Police Office."
What was that article about?

A:

assistant: A 69-year-old woman has been threatened by three masked men during a raid on her home.