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Photos of the week
By Reuters -
A migrant, wrapped with her child in a thermal blanket, waits for a train to Croatia, at a train station in Presevo, Serbia, January 20, 2016. REUTERS/Marko Djurica 
Canada's Milos Raonic hits a shot during his second round match against Spain's Tommy Robredo at the Australian Open tennis tournament at Melbourne Park, Australia, January 21, 2016. REUTERS/Issei Kato 
Jeb Bush smiles as he holds a gun presented to him at Sturm, Ruger & Co. in Newport, New Hampshire January 21, 2016. REUTERS/Mary Schwalm 
President Obama sits down to lunch with autoworker Teana Dowdell (L), Dr. Tolulope Sonuyi (2nd R) and Shinola founder Tom Kartsotis at the Jolly Pumpkin Brewery in Detroit, January 20, 2016. REUTERS/Jonathan Ernst 
A man rides a horse through the flames during the "Luminarias" annual religious celebration on the eve of Saint Anthony's day, Spain's patron saint of animals, in the village of San Bartolome de Pinares, northwest of Madrid, Spain, January 16, 2016. According to tradition that dates back 500 years, people ride their horses through the narrow cobblestone streets of this small village to purify the animals with the smoke of the bonfires. REUTERS/Susana Vera 
A hand is seen on the ground as policemen try to recover the body from under the wreckage at the site of a Saudi-led air strike on the police headquarters in Yemen's capital Sanaa, January 18, 2016. REUTERS/Khaled Abdullah 
Australia's Daria Gavrilova kisses her racquet during her second round match against Czech Republic's Petra Kvitova at the Australian Open tennis tournament at Melbourne Park, Australia, January 20, 2016. REUTERS/Issei Kato 
Former U.S. Marine Amir Hekmati, recently released from an Iranian prison, steps out of the plane piloted by Mike Karnowski (R), as he arrives at an airport in Flint, Michigan, January 21, 2016. REUTERS/Rebecca Cook 
Jason Rezaian, one of the U.S. citizens recently released from detention in Iran, waves to media as he stands with his wife Yeganeh Salehi and mother Mary Rezaian outside the Emergency Room of the Landstuhl Regional Medical Center in the town of Landstuhl, Germany, January 20, 2016. Rezaian was one of four American prisoners released by Iran ahead of the lifting of international sanctions as part of a deal between major powers and Iran to curb Tehran's nuclear program. REUTERS/Kai Pfaffenbach 
Boys eat at a rubbish dump where they are collecting recyclable waste outside Yemen's Red Sea port city of Houdieda January 20, 2016. REUTERS/Abduljabbar Zeyad 
Revellers throw turnips at the Jarramplas, a character who wears a devil-like mask and a colourful costume, as he makes his way through the streets while beating his drum during the Jarramplas traditional festival in Piornal, southwestern Spain, January 20, 2016. Even though the exact origins of the festival are not known, various theories exist linking it to the mythological punishment of Caco by Hercules; a relation to ceremonies celebrated by the American Indians that were seen by the first conquerors; or to a cattle thief being ridiculed and expelled by his village neighbours. The Jarramplas festival takes place annually to mark Saint Sebastian's Day. REUTERS/Susana Vera 
A model presents makeup creations during a show by Maybelline New York at the Berlin Fashion Week Autumn/Winter 2016. REUTERS/Fabrizio Bensch 
German Chancellor Angela Merkel looks at a combat diver during her visit to Naval Base Command in Kiel, Germany, January 19, 2016. REUTERS/Fabian Bimmer 
On an unseasonably cold day, a homeless person tries to stay warm at the entrance of a subway station near the White House in Washington January 20, 2016. REUTERS/Kevin Lamarque 
A Christian armed vigilante group which called themselves "Red God�s Defenders" set on fire a Islamic State flag as they appear to the media for the first time in their mountain hideout in central Mindanao in southern Philippines, January 19, 2016. REUTERS/Stringer 
Blood stains and flak jackets used by attackers remain in the hallway of a dormitory where a militant attack took place, at Bacha Khan University in Charsadda, Pakistan January 20, 2016. REUTERS/Caren Firouz 
Migrants sleep wrapped in blankets inside a registration camp in Presevo, Serbia, January 20, 2016. REUTERS/Marko Djurica 
U.S. President Barack Obama (C) looks at an electric Chevrolet Bolt at the North American International Auto Show in Detroit, Michigan January 20, 2016. REUTERS/Jonathan Ernst 
Vietnamese Communist delegates arrive for the Opening ceremony of the 12th National Congress of Vietnam's Communist Party (VCP), in Hanoi, Vietnam January 21, 2016. REUTERS/Na Son Nguyen/Pool