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In an exclusive BBC interview, the Polish foreign minister accuses Russia of recruiting agents and paying them for acts of sabotage.
The teenagers have been named as 18-year-old Matt Sibanda and 16-year-old Emmanuel Familola.
Worshippers packed St Peter's Square as Pope Leo XIV called for an end to global conflicts.
Vladimir Putin leads commemorations as Moscow marks its annual parade.
BC Monitoring's Russia Editor Vitaly Shevchenko reflects on the Victory Day spectacle in Moscow.
Cardinals joined the newly appointed pope in the Sistine Chapel, in a service that began with a prayer.
The Russian president welcomed 27 world leaders to the event in Red Square.
He becomes the first American to be elected to lead the Catholic Church.
The new pope Robert Prevost will be known as Pope Leo XIV - the first American pontiff to be elected leader of the Catholic Church.
Robert Prevost becomes the first American to be elected pope, following a two-day conclave in Vatican City.
Speaking from the Vatican balcony just after being unveiled as the new pontiff, he paid tribute to his predecessor and called for unity.
Black smoke emerges from the chimney in the Vatican, indicating no new pope has been elected yet
See the moments previous popes were elected by conclaves past, from 1939 to 2013.
After a lengthy wait, black smoke emerged from the Sistine Chapel's chimney at around 9pm local time.
The signal means more voting will take place tomorrow as a new pope has not yet been chosen.
'World Cup can be incentive for Russia to end war', says Trump
BBC News archive footage tells the extraordinary story of the smoke signal confusion of the 1958 Conclave.
After a week of good weather, Paris was hit by a hailstorm and thunder on Saturday afternoon.
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.
