Russian opposition leader, Alexei Navalny (C), reacts as the court delivers the verdict in his trial, in the city of Kirov, Russia, 18 July 2013. Alexei Navalny was sentenced to five years in jail for theft on Thursday, an unexpectedly tough punishment which supporters said proved President Vladimir Putin was a dictator ruling by repression. (Photo by Valentina Svistunova/EPA)

Humanoid robot bartender “Carl” interacts with guests at the Robots Bar and Lounge in the eastern German town of Ilmenau, July 26, 2013. “Carl”, developed and built by mechatronics engineer Ben Schaefer who runs a company for humanoid robots, prepares spirits for the mixing of cocktails and is able to interact with customers in small conversations. (Photo by Fabrizio Bensch/Reuters)

Julian, left, is photographed by his mother with friend Gianluca, right, under water at a public pool in Gelsenkirchen, Germany, on a hot Friday, July 3, 2015. Germany faces a heat wave with temperatures up to 38 degrees Celsius (100 degrees Fahrenheit) at the weekend. (Photo by Martin Meissner/AP Photo)

British model and actress Rosie Huntington-Whiteley arrives for the Versace's fall-winter 2015/2016 Haute Couture fashion collection presented in Paris, France, Sunday, July 5, 2015. (Photo by Thibault Camus/AP Photo)

Part made cricket bats sit in a box at the Salix Cricket Bat Company in Langley, Britain July 6, 2015. Salix Cricket Bat Company use traditional tools and techniques to make cricket bats by hand. (Photo by Neil Hall/Reuters)

A woman looks at goldfish through the warped wall of a fish tank at the Art Aquarium exhibition in Tokyo July 10, 2015. Several thousand goldfish are displayed in dozens of uniquely shaped tanks, using LED lights, projection mapping and music in a show that was produced by Japanese designer Hidetomo Kimura. (Photo by Thomas Peter/Reuters)

Women look at models standing in the David Hart presentation during Men's Fashion Week, in New York, July 13, 2015. The four-day event by the Council of Fashion Designers of America is the New York debut of Fashion Week: Men's. (Photo by Lucas Jackson/Reuters)

A Muslim woman takes a picture of a man in the water of the Mediterranean sea in Tel Aviv during Eid al-Fitr, which marks the end of the holy month of Ramadan July 19, 2015. Thousands of Palestinians used permits given by the Israeli authorities allowing many to enjoy the beaches along Israel's Mediterranean shoreline during the Eid al-Fitr holiday. (Photo by Baz Ratner/Reuters)