Britain's Prince William (r.) and his wife, Catherine, Duchess of Cambridge (l.) applaud after the match between Tsvetana Pironkova of Bulgaria and Venus Williams of the US at the All England Lawn Tennis Championships at Wimbledon in London on June 27. Suzanne Plunkett/Reuters
Britain's Camilla, Duchess of Cornwall, attends Wimbledon on June 22. Kirsty Wigglesworth/AP
British actor Rupert Grint watches play on Centre Court at Wimbledon on June 21. Alastair Grant/AP
Former Wimbledon champion, Martina Navratilova, waves as she arrives on Centre Court for the match between Caroline Wozniacki of Denmark and Jarmila Gajdosova of Australia at Wimbledon on June 25. Stefan Wermuth/Reuters
Actress Kim Cattrall (top l.) watches the match between Venus Williams of the US and Kimiko Date-Krumm of Japan at Wimbledon on June 22. Suzanne Plunkett/Reuters
Former Wimbledon champion John McEnroe (l.) talks with US Open golf champion Rory McIlroy at Wimbledon on June 28. Toby Melville/AP
'Sports Illustrated' model Brooklyn Decker, wife of tennis player Andy Roddick of the US, is seen in the stands at Wimbledon on June 20. Alastair Grant/AP
Diana Ross and her son, actor and musician Evan Ross, watch play at Wimbledon on June 21. Sang Tan/AP
Singer Cliff Richard (l.) and television presenter Gloria Hunniford sit on Centre Court for the match between Victoria Azarenka of Belarus and Petra Kvitova of the Czech Republic at Wimbledon on June 30. Eddie Keogh/Reuters
Basketball player Sasha Vujacic of the New Jersey Nets, fiance of Maria Sharapova of Russia, watches the match between Ms. Sharapova and Anna Chakvetadze of Russia at Wimbledon on June 21. Stefan Wermuth/Reuters
Britain's Princess Beatrice sits in the Royal box on Centre Court for the match between Marion Bartoli of France and Sabine Lisicki of Germany at Wimbledon on June 28. Eddie Keogh/Reuters
At least 60,000 mostly Kurdish refugees have entered Turkey since Thursday after Islamic State militants surrounded a Kurdish stronghold in northern Syria. Some are calling for US airstrikes to stop the group's advance.
ByDominique Soguel, Correspondent
Tens of thousands of Syrians have crossed into Turkey in recent days, fleeing an Islamic State offensive that has opened up another front in Syria's civil war as the US weighs a bombing campaign there.