Week in pictures: 25 February - 3 March 2017

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Our selection of some of the most striking news photographs taken around the world this week.

Mount Etna on the Italian island of SicilyImage source, Antonio Parrinello / Reuters
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Europe's most active volcano erupted for the first time this year, sending a tower of bright lava into the sky. Mount Etna, on the Italian island of Sicily, has been largely dormant for the past two years.
Image source, Marcele Sayo / EPA
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A Brazilian samba school that highlighted the environmental impact caused by the collapse of a dam was crowned champion of the Rio de Janeiro carnival. Portela is Rio's most successful samba school but it had not won the world-famous parade for 33 years.
Image source, Lucy Nicholson / Reuters
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Moonlight won best picture at the Oscars - but only after an error saw La La Land initially declared the winner. La La Land producer Jordan Horowitz is seen here with Warren Beatty and the correct card - at first Beatty had been mistakenly handed the previous winner's envelope, containing a card that said Emma Stone had won best actress for La La Land.
Image source, Matt Cardy / Getty Images
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Across Wales numerous events took place to mark St David's Day and to celebrate Welsh heritage and culture. St David, also known as Dewi Sant in Welsh, is the patron saint of Wales and although many associate St David with leeks or daffodils, his symbol is actually the dove, which usually rests on his shoulder.
Image source, Andrej Isakovic / AFP
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Estonia's Henrik Kutberg competes in the men's long jump qualifying round at the 2017 European Athletics Indoor Championships in Belgrade.
Image source, Bertrand Guay / AFP
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US fashion designer for Off-White, Virgil Abloh, acknowledges the audience at the end of his women's autumn-winter ready-to-wear fashion show in Paris.
Image source, Daniel Irungu / EPA
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The founder of Nanana Winbridge Education Centre, Priscilla Nangurai, poses with girls at the school in Kajiado, Kenya. The centre looks after girls who've run away from home to escape female genital mutilation.
Image source, Pablo Martinez Monsivais / AP
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President Donald Trump said the US was witnessing a "renewal of the American spirit" as he delivered his first speech to Congress.
Image source, Giorgos Moutafis / Reuters
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Mata from Nigeria was one of more than 100 sub-Saharan migrants aboard a raft that was picked up by the Spanish organisation Proactiva Open Arms in the central Mediterranean Sea, off the Libyan coastal city of Sabratha.
Image source, Jose Jordan / AFP
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British driver Lewis Hamilton was back at the wheel of his Mercedes Formula 1 car as the teams began pre-season testing at the Circuit de Catalunya in Spain. "The car is amazing," triple world champion Hamilton said. "It is definitely the fastest I have ever been in F1."

All photographs are copyrighted.