In this handout artists impression provided by the Russia 2018 Organising Commitee, the Rostov on Don Stadium is shown as proposed and presented as part of the Russia 2018 World Cup bid, on September 29, 2011 in Russia. (Illustration by Russia 2018 via Getty Images)

This combination of two photos taken on July 5, 2014, shows the Aazzab family waiting to break their fast, top, and their meal, bottom, during the holy month of Ramadan in Casablanca, Morocco. For the millions of Muslims abstaining from food and drink from sunrise to sunset every day during Islam's holiest month of Ramadan, that first sip of water after a grueling fast is by far the most anticipated moment of the day. (Photo by Abdeljalil Bounhar/AP Photo)

Tiffany Porter of Britain falls after competing in the women's 100 metres hurdles final during the 15th IAAF World Championships at the National Stadium in Beijing, China August 28, 2015. (Photo by David Gray/Reuters)

Second placed Zhang Guowei of China gestures as he celebrates after winning silver in the men's high jump final during the 15th IAAF World Championships at the National Stadium in Beijing, China, August 30, 2015. (Photo by Dylan Martinez/Reuters)

Valentin Arias Delgado and Diana Franco Durango, from Colombia, perform their routine at the Stage style Tango World Championship, in Buenos Aires, Argentina, August 31, 2016. (Photo by Enrique Marcarian/Reuters)

A picture made available on 08 February 2017 shows staff playing with cats inside the Super Very Very Important Cat (VVIC) room at the CATZONIA cat hotel in Damansara, outside Kuala Lumpur, Malaysia, 07 February 2017. (Photo by Fazry Ismail/EPA)

Andrea Rossato, Italy. Professional; Candid. Children enjoy the simple pleasures of a seaside holiday. (Photo by Andrea Rossato/Sony World Photography Awards)

People look at the Harmony of the Seas cruise ship leaving the STX shipyard of Saint-Nazaire, western France, for a three-day test offshore, on March 10, 2016. With a capacity of 6.296 passengers and 2.384 crew members, the Harmony of the Seas, built by STX France for the Royal Caribbean International, is the world's largest ship cruise. (Photo by Loic Venance/AFP Photo)