Top 20 moments from the week that went by

Jordan's Queen Rania holds a picture of recently executed Jordanian pilot Muath al-Kasasbeh, with the words in Arabic reading "Muath is a martyr of right", during a march after Friday prayers in Amman. Photograph: Petra News Agency/ Reuters

A boy sleeps in a hammock while his mother works at a brick kiln on the outskirts of Yangon. Photograph: Soe Zeya Tun/ Reuters

People walk on the flooded St. Mark's Square during a period of seasonal high water and on the first day of carnival, in Venice. Stefano Rellandini/ Reuters

A competitor crawls beneath barbed wire during the Tough Guy event in Perton, central England. The annual event to raise cash for charity challenges thousands of international competitors in a cross country run followed by an assault course consisting of obstacles including water, fire and tunnels. Photograph: Phil Noble/ Reuters

A woman holds onto her hat against the wind during a snow storm in Boston, Massachusetts. Boston, already buried under two feet (60 cm) of snow from a blizzard last week, was predicted to see a foot of snow after a huge winter storm hit the northeastern United States on Monday, the region's second snowy blast in less than a week. Photograph: Dominick Reuter/ Reuters

Former Cuban President Fidel Castro talks to President of Cuba's University Students Federation Randy Perdomo as Castro's wife Dalia looks on during a meeting in Havana in this picture provided by Cubadebate. Photographs of Castro, 88, appeared in official media in February for the first time since August 2014, showing him slightly hunched over while seated, but appearing animated as he spoke with the student leader. Photograph: Reuters

An artificially triggered avalanche thunders down a mountain side at the Vallee de la Sionne in Anzere near Sion. Photograph: Denis Balibouse/ Reuters

Rescuers remove a body in a bag after a TransAsia Airways plane crash landed in a river in New Taipei City. The TransAsia Airways plane with 58 passengers and crew on board careered into a river shortly after taking off from a downtown Taipei airport, killing 23 people and leaving 20 missing, officials said. Photograph: Pichi Chuang/ Reuters

An elderly woman reacts as her acquaintances board a bus to flee due to a military conflict in Debaltseve. The EU's foreign policy chief threw her support on Wednesday behind a call for a temporary truce in the eastern Ukrainian town of Debaltseve to allow for the evacuation of civilians. Photograph: Sergey Polezhaka/ Reuters

Australian journalist Peter Greste reacts upon his return home at Brisbane International Airport. Peter Greste, the Al Jazeera journalist freed after more than a year in an Egyptian prison, arrived back in his Australian homeland on Thursday and called for the release of two colleagues still in custody. Greste was released after 400 days in a Cairo jail and had been in Cyprus since. He had been sentenced to seven years on charges that included aiding a terrorist group in a case that had attracted widespread attention and criticism of Egypt's leadership and judiciary. Photograph: Nathan Richter/ Reuters

Herdsmen from the Kyrgyz ethnic group hold their falcons as they ride on horses during a hunting competition in Akqi county, Xinjiang Uighur Autonomous. Photograph: Stringer/ Reuters

Britain's Prime Minister David Cameron (2nd L) and Chancellor of the Exchequer George Osborne (R) pose for a selfie photograph with an apprentice during a visit to the Spooner engineering works in Ilkley, northern England. Phil Noble/ Reuters

A woman and a child look through a bus window before leaving as people flee the conflict in Debaltseve, eastern Ukraine. Convoys of buses converged from two sides on the town of Debaltseve in eastern Ukraine on Friday after separatist rebels and government forces appeared to have patched together a truce to allow civilians to be evacuated. Photograph: Gleb Garanich/ Reuters

Lee Carter (L) embraces her husband Hollis Johnson while speaking to journalists at the Supreme Court of Canada in Ottawa. The Supreme Court of Canada overturned a ban on physician-assisted suicide on Friday, unanimously reversing a decision it made in 1993 and putting Canada in the company of a handful of Western countries where the practice will be legal. Carter's mother, Kay Carter, traveled to Switzerland to end her life in 2010. Photograph: Chris Wattie/ Reuters

Aam Aadmi Party chief and its chief ministerial candidate for Delhi, Arvind Kejriwal gestures to his supporters after casting his vote outside a polling station during the state assembly election in New Delhi. Photograph: Anindito Mukherjee/ Reuters

A Palestinian boy wearing the headband of Hamas' armed wing attends Friday prayers during a protest against the decision of an Egyptian court to list Hamas' armed wing as a terrorist organization, outside the Egyptain embassy in GazaCity. Photograph: Mohammed Salem/ Reuters

Spectators watch the Philippine fireworks in the skies during the 6th World Pyrotechnics Olympics in Manila February. At least 11 countries are participating in the 6th World Pyro Olympics which opens on Saturday until March 14. The participating countries include Philippines, Japan, Italy, Brazil, Mexico, the Netherlands, Portugal, Sweden, Canada, United Kingdom and China. Photograph: Romeo Ranoco/ Reuters