Photojournalism of the Week: March 15, 2013

People sunbathe by the wall of the Peter and Paul Fortress in St. Petersburg

People sunbathe by the wall of the Peter and Paul Fortress in St. Petersburg. Alexander Demianchuk is a Reuters staffer based in St. Petersburg.Alexander Demianchuk/Reuters

North Korean soldiers with weapons attend military training in an undisclosed location

North Korean soldiers with weapons attend military training in an undisclosed location in this picture released by the North's official KCNA news agency.KCNA KCNA/Reuters

Members of the fire and rescue service set a chimney on the roof of the Sistine Chapel at the Vatican

Workers install a chimney on the roof of the Sistine Chapel in the Vatican, which is used to announce to the world whether or not a new pope has been elected. If black smoke comes out of the chimney, no new pope, but if white smoke comes out, as it did Wednesday, a new pope has been decided upon. Alessandro Bianchi is an Italian-based photographer shooting for Reuters. See more of his work here.Alessandro Bianchi/Reuters

A Balinese man kicks up fire during the "Perang Api" ritual ahead of Nyepi day, in Gianyar, Bali

A Balinese man kicks up fire during the "Perang Api" ritual in Indonesia. The ritual occurs before Nyepi Day, a day of silence for self-reflection to celebrate the Balinese Hindu New Year, where Hindus in Bali observe meditation and fasting.Stringer Indonesia/Reuters

U.S. Defense Secretary Chuck Hagel steps off a military helicopter after arriving from Kabul at Bagram Air Field

U.S. Defense Secretary Chuck Hagel steps off a military helicopter after arriving at Bagram Air Field in Kabul, Afghanistan. The trip was Hagel's first since being sworn-in as U.S. President Barack Obama's Defense Secretary. Jason Reed is a Reuters staffer who primarily covers President Barack Obama and his cabinet members. See more of his work here and here.Jason Reed/Reuters

A billboard with pictures of a lingerie model is seen in front of the Commune northwest of Medellin city

A billboard with pictures of a lingerie model is seen in front of the Commune northwest of Medellin city, Columbia. Albeiro Lopera is a photojournalist shooting for Reuters in Columbia.Albeiro Lopera/Reuters

Labourers sift harvested wheat in a field on the outskirts of Ahmedabad

Labourers sift harvested wheat in a field on the outskirts of the western Indian city of Ahmedabad, India. Amit Dave is a Reuters photographer based in Western India. See more of his work in our past round-ups here and here.Amit Dave/Reuters

NASA handout photo of Canadian Space Agency astronaut Chris Hadfield

Canadian Space Agency astronaut Chris Hadfield, Expedition 34 flight engineer, watches a water bubble float freely between him and the camera. Hadfield is the first Canadian commander of the International Space Station.REUTERS/NASA/Handout

Christian worshippers visit the Church of the Nativity, revered as the site of Jesus' birth, in the West Bank town of Bethlehem

Christian worshippers visit the Church of the Nativity, revered as the site of Jesus' birth, in the West Bank town of Bethlehem. Ammar Awad is a Reuters staffer based in Palestine. See more of his work here.Ammar Awad/Reuters

Newly elected Pope Francis, Cardinal Jorge Mario Bergoglio of Argentina appears on the balcony of St. Peter's Basilica at the Vatican

Newly elected Pope Francis, Cardinal Jorge Mario Bergoglio of Argentina appears on the balcony of St. Peter's Basilica after being elected by the conclave of cardinals, at the Vatican. Dylan Martinez is a Reuters staffer based in the UK. He made this photo with the insanely exspensive Nikkor 1200-1700mm f/5.6-8P IF-ED lens. You can read more about the photo and lens used to take it over on Pop Photo.Dylan Martinez/Reuters

Be sure to check out our archive of past Photojournalism of the Week galleries, where you will find more great work.