Members of the US Coast Guard conduct flare training on Plum Island, MassachusettsUS Coast Guard/Petty Officer 3rd Class MyeongHi Clegg/ReutersA US soldier from Grim Company of the 3rd Cavalry Regiment sits in a vehicle as he prepares for an early morning mission at Forward Operating Base Fenty in the Nangarhar province of AfghanistanLucas Jackson/ReutersXie Xiaoming, 26-year-old owner of a yoga club, practises yoga near trees covered in frost on the snow-covered banks of the Songhua River in Jilin, Jilin province, ChinaReutersPeople walks in front of a Ferris wheel in Nice, southeastern FranceValery Hache/AFPMembers of the public enjoy a ride on the star flyer in Princes Street Gardens in EdinburghJeff J Mitchell/Getty ImagesA man dressed as Santa Claus slides on a pulley at Sugar Loaf Mountain in Rio de Janeiro, BrazilYasuyoshi Chiba/AFPStudents dressed as Santa Claus distribute sweets among children at a school in the northern Indian city of ChandigarhAjay Verma/ReutersA street sweeper dressed as a robot Santa Claus cleans a street in Manila, the PhilippinesNoel Celis/AFPA man lifts a boy in the air as they enjoy fake snow at the Christmas Wonderland fair in SingaporeXavier Galiana/ReutersPrince Harry swings three-year-old orphan boy Lerato, in this photograph taken with the help of three-year-old blind girl Karabo, during a visit to Phelisanong Children's Home in LesothoChris Jackson/Getty ImagesCamilla meets characters from the finale of the Horse of the Year show in LondonAlastair Grant/Pool/Getty ImagesA man looks at an art work by Chinese artist Huang Yong Ping, during a preview of the exhibition Bugarach at the Maxxi museum in RomeGabriel Bouys/AFPA woman poses for a photo with the Wall Street bull in the Manhattan borough of New YorkCarlo Allegri/ReutersWomen in angel costumes line up to receive an embrace from a man giving out 'free hugs' to those mourning the victims of the siege in Sydney's Martin PlaceJason Reed/ReutersA student is detained during a demonstration near the Ministry of Education at Santiago, ChileIvan Alvarado/Reuters