Armed police walk along Oxford Street, London, Britain November 24, 2017. REUTERS/Peter Nicholls

CORRECTION / TOPSHOT - Relatives of crew member Damian Tagliapietra express their grief outside Argentina's Navy base in Mar del Plata, on the Atlantic coast south of Buenos Aires, on November 24, 2017. Argentina's navy confirmed Thursday that an unusual noise heard in the Atlantic near the last known position of a missing submarine appeared to be an explosion, dashing the last hopes of finding the vessel's 44 crew members alive. Relatives of the missing sailors reacted with grief and anger to the news after holding out hope since the sub was reported overdue at its Mar del Plata base on November 17, two days after the explosion. / AFP / EITAN ABRAMOVICH

TOPSHOT - Supporters hold posters of Zimbabwe Army Chief of Staff General Constantino Chiwenga during newly sworn-in President Inauguration ceremony at the National Sport Stadium in Harare, on November 24, 2017. Zimbabwe's newly sworn-in President Emmerson Mnangagwa vowed during his inauguration speech on November 24 to protect foreign investments in the country as he sought to lay out his economic credentials. "In this global world no nation is, can, or need be an island. All foreign investments will be safe in Zimbabwe," he told a crowd of tens of thousands at his inauguration ceremony. / AFP / MUJAHID SAFODIEN

Nov 23, 2017; Portland, OR, USA; Michigan State Spartans forward Xavier Tillman (23) reacts after going for the ball DePaul Blue Demons guard Max Strus (31) and forward Jaylen Butz (2) in the first half at Moda Center. Mandatory Credit: Jaime Valdez-USA TODAY Sports TPX IMAGES OF THE DAY

Participants of a demonstration during a strike hold up a figure made of cardboard in front of the local site of the online retail company Amazon in Leipzig, Germany, Friday, Nov. 24, 2017. A labor union says workers at a half dozen Amazon distribution centers in Germany have walked off the job, the latest in a string of walkouts in a long-running wage dispute with the American online retailer at one of its busiest times. (Sebastian Willnow/dpa via AP)

Shoppers pass a promotional sign for 'Black Friday' sales discounts on Oxford Street in London, on November 24, 2017. Black Friday is a sales offer originating from the US where retailers slash prices on the day after the Thanksgiving holiday. In the UK it is used as a marketing device to entice Christmas shoppers with the discounts at stores often lasting for a week. / AFP / Daniel LEAL-OLIVAS

Nov 23, 2017; Portland, OR, USA; Michigan State Spartans forward Xavier Tillman (23) reacts after going for the ball DePaul Blue Demons guard Max Strus (31) and forward Jaylen Butz (2) in the first half at Moda Center. Mandatory Credit: Jaime Valdez-USA TODAY Sports TPX IMAGES OF THE DAY

TOPSHOT - People perform the Friday prayers in the Mirail area in Toulouse, southern France, on November 24, 2017. / AFP / REMY GABALDA

TOPSHOT - German Chancellor Angela Merkel looks through raindrops on her car window as she arrives for an ?EU Eastern Partnership summit with six eastern partner countries at the European Council in Brussels on November 24, 2017. Leaders from the EU and six former Soviet states meet in Brussels on November 24 for the latest summit aimed at deepening ties, but thorny subjects like Russian influence and the war in Ukraine are off the agenda. / AFP / POOL / Virginia Mayo

Rugby League World Cup - Australia vs Fiji - Lang Park, Brisbane, Australia, November 24, 2017. Fiji's Suliasi Vunivalu passes the ball as he is tackled by Australian players during their semi-final match. AAP/Darren England/via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. NO RESALES. NO ARCHIVE. AUSTRALIA OUT. NEW ZEALAND OUT. TPX IMAGES OF THE DAY

A security guard attempts to detain a topless activist of women's rights group Femen, who carries out the "Black Friday Sale" performance at a shop of Roshen company while demanding from Ukrainian President Petro Poroshenko to fulfil, according to the activist, his pre-election promise and sell the confectionery business Roshen, in Kiev Ukraine November 24, 2017. REUTERS/Valentyn Ogirenko TEMPLATE OUT.

GRAF070. MADRID, 24/11/2017.- El capit·n del Real Madrid Sergio Ramos, con una m·scara protectora tras la fractura de nariz que sufriÛ en el derbi, durante el entrenamiento de esta maÒana de su equipo en la Ciudad Deportiva de Valdebebas, en la vÌspera del partido de la 13™ jornada de LaLiga Santander que disputan maÒana ante el M·laga en el Santiago BernabÈu. EFE/Javier LizÛn

FC Barcelona's Lionel Messi poses with his his fourth Golden Shoe award after receiving his fourth Golden Shoe award for leading all of Europe's leagues in scoring last season in Barcelona, Spain, Friday, Nov 24, 2017. Messi scored 37 goals in the Spanish league last season. It was the fourth time the Barcelona forward has received the honor. (AP Photo/Manu Fernandez)

Bolivia's President Evo Morales (L) shakes hands with Venezuel's counterpart Nicolas Maduro at the IV Gas Exporting Countries Forum in Santa Cruz, Bolivia, November 24 , 2017. REUTERS/David Mercado TPX IMAGES OF THE DAY