Firefighters stand on their truck and salute along with other attendants on an overpass as the train carrying the body of former president George H.W. Bush travels past on the way to Bush's final internment Thursday, December 6, 2018, in Spring, Texas. (Photo by Michael Wyke/AP Photo)





The flag-draped casket of former President George H.W. Bush passes through Magnolia, Texas, Thursday, Dec. 6, 2018, along the route from Spring to College Station, Texas. (Photo by David J. Phillip/Pool via Reuters)





People pay their respects as the train carrying the casket of former President George H.W. Bush passes Thursday, Dec. 6, 2018, along the route from Spring to College Station, Texas. (Photo by David J. Phillip/Pool via Reuters)





Ana Garza, of Cypress, Texas, displays coins flattened by the memorial train carrying the casket of President George H.W. Bush when it passed through Pinehurst, Texas, Thursday, December 6, 2018. On Thursday, that same 4,300-horsepower machine left a suburban Houston railyard loaded with Bush's casket for his final journey after almost a week of ceremonies in Washington and Texas. (Photo by Nomaan Merchant/AP Photo)





Protesters overturn a vehicle on December 6, 2018 in Marseille, southern France, during a demonstration of high school students protesting against French government Education reforms. (Photo by Gérard Julien/AFP Photo)





A burning car is seen in the street as youths and high-school students clash with police during a demonstration against the French government's reform plan in Marseille, France, December 6, 2018. (Photo by Jean-Paul Pelissier/Reuters)





A hooded youth prepares to throw a petrol bomb at riot police in the northern Greek city of Thessaloniki, on Thursday, December 6, 2018 during a rally commemorating the killing of a 15-year old student back in 2008. School and university students marched in various towns of the country to mark the tenth anniversary of a fatal police shooting of a teenager in Athens that sparked the worst rioting Greece had seen in decades. (Photo by Giannis Papanikos/AP Photo)





Protesters use fireworks against riot police during clashes in the Athens neighborhood of Exarchia, a haven for extreme leftists and anarchists, Thursday, December 6, 2018. New protest marches were underway in Greece Thursday evening on the 10th anniversary of the fatal police shooting of a teenager, hours after violent initial demonstrations where masked youths attacked police with firebombs and stones. (Photo by Yorgos Karahalis/AP Photo)





Protesters wear gas masks during an anniversary rally marking the 2008 police shooting of 15-year-old student, Alexandros Grigoropoulos, in Athens, Greece, December 6, 2018. (Photo by Costas Baltas/Reuters)





The armored personnel carrier Puma of the German Bundeswehr during a training at the Bundeswehr infantry training facility on December 6, 2018 in Munster, Germany. Germany is increasing its annual defense budget following reports over recent years of a large portion of its military planes, ships, tanks and other weaponry as grounded due to lack of spare parts. (Photo by David Hecker/Getty Images)





Ukrainian paratroopers approach military planes before departing to the eastern regions of the country on mission at an airforce base near Zhytomyr, Ukraine December 6, 2018. (Photo by Gleb Garanich/Reuters)





A tank fires during military exercises in the Ukrainian Ground Forces training centre near Honcharivske in Chernihiv region, Ukraine December 3, 2018. (Photo by Valentyn Ogirenko/Reuters)





A demonstrator mock-crucifies himself at Eduardo Abaroa Square to protest against Bolivia's President Evo Morales bid for re-election in 2019, in La Paz, Bolivia December 6, 2018. (Photo by David Mercado/Reuters)





A boy plays with a life-size cardboard cutout of a pregnant woman at the Benito Juarez sports complex, in Tijuana, Mexico, on Friday, November 30, 2018. Authorities in the Mexican city of Tijuana have been transferring the more than 6,000 Central American migrants from an overcrowded shelter on the border to an events hall further away. (Photo by Rebecca Blackwell/AP Photo)





A man helps Pope Francis to put on a neckerchief he gifted to the pope, during the general audience at the Paul VI Hall in Vatican, December 5, 2018. (Photo by Alessandro Bianchi/Reuters)





A view of the Virgin of Guadalupe giant statue in Ocuilan, Mexico state, Mexico on December 5, 2018. Ouilan's image of the Virgin is the largest in the world and was inaugurated on February 12, 2017. (Photo by Mario Vazquez/AFP Photo)





A man stands among recycled-materials penguin sculptures at a square as part of an environmental campaign in Santiago, Chile December 6, 2018. (Photo by Ivan Alvarado/Reuters)





A man wearing a storm trooper costume holds a sketchbook belonging to costume designer John Mollo, and showing illustrations for Star Wars costumes, during a photo-call ahead of an auction at Bonhams in central London, Britain December 6, 2018. (Photo by Toby Melville/Reuters)





A visitor looks at a Soviet-made Zaporozhets retro car, which was converted into an aquarium at a small and medium business exhibition in St. Petersburg, Russia on December 5, 2018. (Photo by Anton Vaganov/Reuters)





Indian schoolchildren dressed as Santa Claus pose as they take part in a Christmas event at a school in Chennai on December 5, 2018. (Photo by Arun Sankar/AFP Photo)





A buyer departs with her purchased bundles of holly during the annual Mistletoe and Holly Auctions held at Tenbury Wells, central England on December 4, 2018. The auctions, which have been held in Tenbury Wells for over 100 years, attract a range of buyers including florists, stately home owners, grocers, market stall holders, hoteliers, garden centres, and members of the public looking to decorate their homes for the Christmas season. (Photo by Oli Scarff/AFP Photo)