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Our selection of some of the most striking news photographs taken around the world this week.
Image copyrightMario Anzuoni / ReutersImage caption
Actors Kurt Russell and Goldie Hawn kiss after unveiling their stars on the Hollywood Walk of Fame in Los Angeles, California.
Image copyrightArnd Wiegmann / ReutersImage caption
A protester dressed as a clown protects a police officer from the rain during a May Day demonstration in Zurich, Switzerland
Image copyrightEPAImage caption
Hayden Paddon of New Zealand drives his Hyundai i20 Coupe through the crowd during day four of Rally Argentina.
Image copyrightFacundo Arrizabalanga / EPAImage caption
The Duke of Edinburgh announced he is retiring from royal duties this autumn. The duke will attend already scheduled engagements between now and August but will not accept new invitations.
Image copyrightWolfgang Rattay / ReutersImage caption
German Chancellor Angela Merkel, Svein Richard Brandtzaeg, President and Chief Executive Officer of Rolled Products and Norwegian Prime Minister Erna Solberg pose for photographs at the the official opening of a production line at a branch of Norway's Hydro aluminium company in Grevenbroich, Germany.
Image copyrightKazuhiro Nogikazuhiro / AFP Image caption
Visitors flock to a hill covered with an estimated 4.5 million Nemophila flowers in bloom at Hitachi Seaside Park in Hitachinaka.
Image copyrightJonathan Brady / PAImage caption
Liberal Democrat leader Tim Farron addresses the party faithful during a general election campaign visit to Harts Boatyard on the banks of the River Thames in Surbiton. In the local elections on 4 May, the party president Sal Brinton described her party's performance overall as "patchy", while former business secretary Vince Cable said there had been no "spectacular breakthrough".
Image copyrightReutersImage caption
A man herds his horses during heavy snow in Altay, Xinjiang Autonomous Region, China,.
Image copyrightDimitrios Kambouris / Getty ImagesImage caption
Katy Perry drew lots of attention with her outfit for the Costume Institute Gala at Metropolitan Museum of Art in New York City.