The BBC's Gordon Corera considers the attack on Sergei Skripal and his daughter in Salisbury.
Residents applauded as the lights came back on in Spain's capital, after a huge power cut brought the country to a standstill.
From traffic lights turning off in Spain, to Metro stations plunged into darkness in Portugal - power outages have caused havoc.
The BBC's religion editor Aleem Maqbool explains why it's so difficult to guess who will be the next pontiff.
Hundreds of thousands of mourners gather in Rome to pay tribute to the late pontiff.
The Pope has chosen to be buried in a simple coffin at the church of Santa Maria Maggiore.
The Pope is being laid to rest at the church of Santa Maria Maggiore in Rome.
The pontiff's funeral is being held days after he died at the age of 88.
Applause heard as Zelensky arrives for Pope Francis' funeral
Thousands have gathered in Rome to pay their respects to the late pontiff.
The BBC's Sarah Rainsford says people from all over the world have gathered to pay their respects.
Pope Francis will be buried in Rome's church of Santa Maria Maggiore, breaking a 100-year-old tradition.
From Pius XII to Benedict XVI, the BBC looks back at video from papal funerals since 1958.
New York family describe paying their respects to Pope Francis as a "once-in-a-lifetime opportunity".
Pope Francis will remain lying in an open coffin until his funeral on Saturday
The pontiff's last public appearance was for an Easter Sunday blessing at the Vatican's St Peter's Square.
The most important date in the Christian calendar is being marked around the world.
It is unclear if Ukraine has accepted the terms or already discussed the plans for the pause in fighting with Russia.
A look behind the investigation by BBC Verify's Olga Robinson and Christine Jeavans into the seized homes of Mariupol.
Police suspect the range was used by a weapons trafficking ring to test assault rifles and other arms.
A climbing pair shatter the record for completing the daunting north faces of a famed trio of Swiss mountains.
