Visitors lay flowers at a makeshift memorial near the scene of a fatal siege in the heart of Sydney's financial district

Peter Parks/AFP/Getty Images

Visitors lay flowers at a makeshift memorial near the scene of a fatal siege in the heart of Sydney’s financial district

Union members clash with police in Brussels during a national general strike which was called for by the different unions to protest against austerity measures.

Thierry Roge/AFP/Getty Images

Union members clash with police in Brussels during a national strike, which was called to protest against austerity measures.

Cho Hyun-ah, who was head of cabin service at Korean Air and the oldest child of Korean Air chairman Cho Yang-ho, arrives for questioning at the Aviation and Railway Accident Investigation Board office of Ministry of Land, Infrastructure and Transport in Seoul, South Korea. The chairman of Korean Air Lines Co. apologised for the behavior of his adult daughter who delayed a flight in an incident now dubbed "nut rage."

Lee Jin-man/AP

Cho Hyun-ah, who was head of cabin service at Korean Air and the oldest child of Korean Air chairman Cho Yang-ho, arrives for questioning at the Aviation and Railway Accident Investigation Board office of the Ministry of Land, Infrastructure and Transport in Seoul, South Korea. The chairman of Korean Air Lines Co. apologised for the behaviour of his adult daughter who delayed a flight in an incident now dubbed “nut rage.”

A Christmas star on top of a sales booth is pictured against the colorful morning sky at the Christmas market in Dresden, eastern Germany.

Arno Burgi/dpa/AP

A Christmas star on top of a sales booth is pictured against the colorful morning sky at the Christmas market in Dresden, eastern Germany

Two cyclists are reflected in a puddle shortly after a storm on the banks of the river Rhine in Duesseldorf, Germany.

Marius Becker/dpa/AP

Two cyclists are reflected in a puddle shortly after a storm on the banks of the river Rhine in Duesseldorf, Germany.

Copies of the French Civil Code are placed amongst a frieze depicting the "Oath of the Jeu de Paume" (June 20, 1789) on the Republic statue as French lawyers, notaries and bailiffs attend a national protest in Paris against a government reform plan to deregulate their profession.

Charles Platiau/Reuters

Copies of the French Civil Code are placed amongst a frieze depicting the “Oath of the Jeu de Paume” (June 20, 1789) on the Republic statue as French lawyers, notaries and bailiffs attend a national protest in Paris against a government reform plan to deregulate their profession.

Workers remove a banner at an area blocked by pro-democracy protesters outside the People's Liberation  Army  headquarters in Hong Kong. Authorities started, on Thursday, clearing the main pro-democracy protest site that has choked roads into the city's most economically and politically important district for more than two months.

Athit Perawongmetha/Reuters

Workers remove a banner at an area blocked by pro-democracy protesters outside the People’s Liberation Army headquarters in Hong Kong. Authorities started, on Thursday, clearing the main pro-democracy protest site that has choked roads into the city’s most economically and politically important district for more than two months.

Frost covers the mask and part of the hat of a soldier of the People's Liberation Army (PLA) as he stand guard near the border of China and Russia in Heihe, Heilongjiang province.

Reuters

Frost covers the mask and part of the hat of a soldier of the People’s Liberation Army (PLA) as he stand guard near the border of China and Russia in Heihe, Heilongjiang province.

U.S. President Barack Obama, with bags slung over his shoulders, delivers toys and gifts donated by Executive Office of the President staff to the Marine Corps Reserve Toys for Tots Program at Joint Base Anacostia-Bolling.

Chip Somodevilla/Getty Images

U.S. President Barack Obama, with bags slung over his shoulders, delivers toys and gifts donated by Executive Office of the President staff to the Marine Corps Reserve Toys for Tots Program at Joint Base Anacostia-Bolling.

Legoland model maker Katrina James (R) poses with a 3kg Lego star as she places it onto the top of a 8m tall Lego christmas tree at Legoland Windsor Resort, west of London. The tree is comprised of 300,000 lego bricks and took 4 weeks to build.

Leon Neal/AFP/Getty Images

Legoland model maker Katrina James (R) poses with a 3kg Lego star as she places it on top of a 8m tall Lego christmas tree at Legoland Windsor Resort, west of London. The tree is comprised of 300,000 Lego bricks and took four weeks to build.