New CDU leader Annegret Kramp-Karrenbauer talks with former CDU chief and German Chancellor Angela Merkel during the Christian Democratic Union (CDU) party congress in Hamburg, Germany, December 8, 2018.

Migrants, intercepted off the coast in the Mediterranean Sea, walk after disembarking a rescue boat at dawn at the port of Malaga, southern Spain, December 9, 2018.

Air force officers throw their caps in the air, as they celebrate after their graduation ceremony, at the Brazilian Air Force Academy (AFA) in Pirassununga, Brazil December 7, 2018.

Revellers dressed as Santa Claus take a break during the annual SantaCon event in central London, Britain, December 8, 2018.

Supporters of Turkish President Tayyip Erdogan wait for his arrival during an opening ceremony in Istanbul, Turkey December 8, 2018.

A view of the Place de la Republique as protesters wearing yellow vests gather during a national day of protest by the "yellow vests" movement in Paris, France, December 8, 2018.

A fireman extinguishes a burning bicycle during clashes with yellow vests protesters as part of a national day of protest by the "yellow vests" movement in Paris, France, December 8, 2018.

A woman carries a basket of cow-dung through a frost-covered field on a foggy morning in Srinagar December 7, 2018.

A migrant, who is part of a caravan of thousands from Central America trying to reach the United States, looks at a hole under the border wall as he tries to cross from Mexico to the U.S in Tijuana, Mexico, December 7, 2018.

A woman is sprayed with teargas by the riot police officer during the "yellow vests" protest against higher fuel prices, in Brussels, Belgium, December 8, 2018.

Swimmers take part in a charity event called 'Polar Plunge' at Sandycove beach in support of the Special Olympics in Dublin, Ireland, December 8, 2018.

A car burns during clashes with police at a demonstration of the "yellow vests" movement in Marseille, France, December 8, 2018. REUTERS/Jean-Paul Pelissier TPX IMAGES OF THE DAY - RC15914EAA20

A protester waves a French flag during clashes with police at a demonstration by the "yellow vests" movement in Paris, France, December 8, 2018.

A view of the illuminated City Palace, one of the venues for the pre-wedding celebrations of Isha Ambani, daughter of the Chairman of Reliance Industries Mukesh Ambani, is seen in Udaipur, in the desert state of Rajasthan, India, December 9, 2018.

U.S. President Donald Trump (2nd R) is joined by Secretary of the Navy Richard Spencer (2nd L) at the Army-Navy college football game at Lincoln Financial Field in Philadelphia, U.S., December 8, 2018.

British volunteer Paul Barton plays piano for sick, abused, retired and rescued elephants in sanctuary along Thailand-Myanmar border in Kanchanaburi, Thailand, December 9, 2018. Paul has been playing piano for elephants as a volunteer for almost ten years.

French CRS riot police apprehend a man in a street near Saint Lazare train station during a national day of protest by the "yellow vests" movement in Paris, France, December 8, 2018.