Military aircrafts are parked at an airbase during CRUZEX, a multi-national air exercise hosted by the Brazilian Air Force in Natal, Brazil November 19, 2018.

A man looks at a Queen of the Andes plant (Puya raimondii) as it begins to bloom, outside of El Alto international airport, on the outskirts of La Paz, Bolivia, November 16, 2018. This plant only blooms when the plant reaches an age of about 80 to 150 years old. Picture taken November 16, 2018.

Swans are seen in a boat after they were caught at Hamburg's inner city lake Alster by Olaf Niess and his team to bring them in their winter quarters in Hamburg, Germany November 20, 2018. REUTERS/Fabian Bimmer TPX IMAGES OF THE DAY - RC1BA54189A0

A woman holds an umbrella at the Valle de los Caidos (The Valley of the Fallen), the mausoleum holding the remains of former Spanish dictator Francisco Franco, on the 43rd anniversary of his death in San Lorenzo de El Escorial, outside Madrid, Spain, November 20, 2018.

A general view shows Fuego volcano (Volcano of Fire) erupting as seen from San Juan Alotenango, outside of Guatemala City, Guatemala November 19, 2018. REUTERS/Luis Echeverria

Newborn baby giraffe Ella is pictured with her mother in the Tierpark Zoo in Berlin, Germany, November 20, 2018.

People walk under umbrellas on Westminster Bridge in London, Britain, November 20, 2018. REUTERS/Henry Nicholls - RC16E00552A0

China's President Xi Jinping waves to the crowd upon his arrival at Ninoy Aquino International airport during a state visit in Manila, Philippines, November 20, 2018.

A woman prays as she touches the carcass of a male elephant, who according to forest officials was electrocuted in a paddy field, at Gendhali Bebejia village in Nagaon district in the northeastern state of Assam, India, November 20, 2018.

Abu Dhabi's Crown Prince Sheikh Mohammed bin Zayed al-Nahyan's plane is seen approaching for landing, as Jordanian honour guards stand at Amman military airport, Jordan, November 20, 2018.

Rescue workers survey the scene after a commuter train derailed between Terrassa and Manresa, outside Barcelona, Spain, November 20, 2018.

A migrant, part of a caravan of thousands from Central America trying to reach the United States, stands in a shelter in Tijuana, Mexico, November 19, 2018.

Greek pensioners shout slogans as they take part in a demonstration against pension cuts in Athens, Greece, November 20, 2018.

Claudia, wife of Armin Capaul the horned cow initiative (Hornkuh-Initiative) founder, cleans a cow ahead of a national vote on November 25, at the Valengiron farm in Perrefitte near Moutier, Switzerland, November 15, 2018. Picture taken November 15, 2018.

Migrants, part of a caravan of thousands traveling from Central America en route to the United States, make their way to Tijuana from Mexicali, Mexico, November 20, 2018.

Frances, a migrant woman from Honduras taking refuge in a shelter with a caravan from Central America trying to reach the United States, places body lotion on her one-year-old daughter Sujey in Tijuana, Mexico November 20, 2018.

A coffin carrying the remains of a U.N. soldier who died during the Korean War, is seen during a repatriation ceremony, in Seoul, South Korea, November 20, 2018.

People climb a tree to watch the body of Hafeezullah Mir, a Kashmiri separatist leader, who according to local media was killed by unidentified gunmen, before his funeral in south Kashmir's Achabal town November 20, 2018.

U.S. President Donald Trump declares a Thanksgiving turkey named "Peas" pardoned as National Turkey Federation Chairman Jeff Sveen looks on during the 71st presentation and pardoning of the Thanksgiving turkeys in the Rose Garden of the White House in Washington, U.S., November 20, 2018.