BRASILIA, BRAZIL - MARCH 18: Supporters of President Dilma Rousseff and former President Luiz Inacio Lula da Silva demonstrate at Esplanada dos Ministerios in March 18, 2016 in Brasilia, Brazil. A Brazilian court ruled that 'Lula' could begin work as chief of staff for current President Dilma Rousseff. (Photo by Mario Tama/Getty Images)
A visitor interacts with Anish Kapoor's 'Random Triangle Mirror' during the press preview for Art Basel in Hong Kong on March 22, 2016, before it opens to the public from March 24-26. Giant gold cubes designed to be defaced and a large-scale tribute to Hong Kong's lowly cardboard sellers took centre stage as Art Basel opened its doors in the city on March 22. (Photo credit should read ANTHONY WALLACE/AFP/Getty Images)
TOPSHOT - A woman carries a tortoise purchased from fishermen at the Soleil Wharf on March 21, 2016 in Cite Soleil, Port-au-Prince. Fishermen sell the fish which in turn is sold at small markets in the city. / AFP / HECTOR RETAMAL (Photo credit should read HECTOR RETAMAL/AFP/Getty Images)
WASHINGTON, DC - MARCH 21: American and Palestinian flags wave outside of the Verizon Center during the American Israel Public Affairs Committee (AIPAC) conference on March 21, 2016 in Washington, D.C. Presidential candidates from both parties gathered in Washington to pitch their plans for Israel. (Photo by Gabriella Demczuk/Getty Images)
NEW YORK, NY - MARCH 21: A woman walks by the New York Stock Exchange (NYSE) near Wall Street on March 21, 2016 in New York City. Following a strong week for US stocks, the Dow Jones industrial average was down slightly in morning trading. (Photo by Spencer Platt/Getty Images)
MURMANK REGION, RUSSIA. MARCH 21, 2016. A reindeer sled race during Reindeer Herder's Day celebrations in the village of Lovozero. Lev Fedoseyev/TASS (Photo by Lev Fedoseyev\TASS via Getty Images)
NEDERLAND, CO - MARCH 18: A Northern Saw-Whet owl rests on a branch on March 20, 2016 in Nederland, Colorado. The owl can weigh from 1.9 to 5.3 oz with an average of 2.8 oz making them one of the smallest owls in North America. They are close in size to an American Robin. They are native to Southern Rockies in Colorado, Southern Wyoming and Northern New Mexico. (Photo by Helen H. Richardson/The Denver Post via Getty Images)
BOSTON, MA - MARCH 20: A man in a costume dances as bagpipers pass during the annual South Boston St. Patrick's Parade passes on March 20, 2016 in Boston, Massachusetts. According to parade organizers, the South Boston St. Patrick's Parade is listed as the second longest parade in the country. (Photo by Scott Eisen/Getty Images)
MEXICO CITY, MEXICO - MARCH 20: Aspects of the air balloons build up during the 4th National Hot Air Balloon Meeting at Teotihuacan arceheological site on March 20, 2016 in Mexico City, Mexico. (Photo by Hector Vivas/LatinContent/Getty Images)
HAVANA, CUBA - MARCH 20: Men play chess in a boarded up doorway in the historic Old Havana neighborhood March 20, 2016 in Havana, Cuba. President Barack Obama is scheduled to arrive in Cuba Sunday afternoon, the first time a sitting U.S. president has visited the island nation in nearly 90 years. (Photo by Chip Somodevilla/Getty Images)
IDOMENI, GREECE - MARCH 20: A child wanders between tents erected inside an old railway shed where people are sheltering at the Idomeni refugee camp on the Greek Macedonia border on March 20, 2016 in Idomeni, Greece. Thousands of migrants remain stranded at the border camp following high hopes that yesterday's EU summit would have brought them some sort of resolution. The decision by Macedonia to close its border to migrants last week followed the lead taken by neighbouring countries, effectively sealing the so-called western Balkan route, the main migration route that has been used by hundreds of thousands of migrants to reach countries in western Europe such as Germany. Humanitarian workers have described the conditions at the camp as desperate, which has been made much worse by recent spells of heavy rain. (Photo by Matt Cardy/Getty Images)
TOPSHOT - A women casts her ballot for the second round of the presidential election at the polling station in Niamey on March 20, 2016.
Voters in Niger cast ballots in the country's first-ever presidential run-off on March 20, 2016, with incumbent Mahamadou Issoufou on track for a second term as the opposition observed a boycott. The election pits 64-year-old Issoufou, a former mining engineer nicknamed 'the Lion', against jailed opposition leader Hama Amadou, 66, known as 'the Phoenix' for his ability to make political comebacks. / AFP / ISSOUF SANOGO (Photo credit should read ISSOUF SANOGO/AFP/Getty Images)
TOPSHOT - A woman prays on a hill with wooden crosses as she celebrates Palm Sunday in the town of Oshmiany, some 130 kilometres northwest of Minsk, on March 20, 2016. / AFP / SERGEI GAPON (Photo credit should read SERGEI GAPON/AFP/Getty Images)
MOSCOW, RUSSIA - MARCH 19: Saint Basil's Cathedral is seen after lights were turned off to mark Earth Hour on March 19, 2016 in Moscow, Russia. Illumination of the Kremlin was turned off for one hour as part of the the 10th environmental event of the World Wide Fund for Nature. (Photo by Kristina Kormilitsyna/Kommersant Photo via Getty Images)
ROSTOV-ON-DON, RUSSIA. MARCH 19, 2016. Russian Emergency Situations Ministry employees at the crash site of a FlyDubai Boeing 737-800 crash at the Rostov-on-Don airport. The plane crashed during a second attempt to land in bad weather conditions killing all 55 passengers and 7 crew members aboard. Maxim Grigoryev/TASS (Photo by Maxim Grigoryev\TASS via Getty Images)
IDOMENI, GREECE - MARCH 19: A man warms his hands by a fire at the Idomeni refugee camp on the Greek Macedonia border on March 19, 2016 in Idomeni, Greece. Thousands of migrants remain stranded at the border camp following high hopes that yesterday's EU summit would have brought them some sort of resolution. The decision by Macedonia to close its border to migrants last week followed the lead taken by neighbouring countries, effectively sealed the so-called western Balkan route, the main migration route that has been used by hundreds of thousands of migrants to reach countries in western Europe such as Germany. Humanitarian workers have described the conditions at the camp as desperate, which has been made much worse by recent spells of heavy rain. (Photo by Carsten Koall/Getty Images)
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Headlines this week were dominated by the tragic attacks that shook the Belgian capital of Brussels this week. Bombs went off at the city's airport and at a busy subway station, killing 31 people and injuring hundreds more.
Other major stories from the past week included President Obama's trip to Cuba, and a plane crash at an airport in Russia that killed all 62 on board.
Click through the slideshow above to see photos from all of these stories and more, and be sure to check back next weekend for our selection of the best photos from the coming 7 days.