US President Barack Obama and his wife Michelle dance tango during a state dinner hosted by Argentina's President Mauricio Macri at the Centro Cultural Kirchner as part of President Obama's two-day visit to Argentina, in Buenos Aires March 23, 2016. Photo: Reuters
People attend a street memorial service near the old stock exchange in Brussels following Tuesday's bomb attacks in Brussels, Belgium, March 23, 2016. Photo: Reuters
Oscar-winning actor Leonardo DiCaprio (C) signs autographs for fans during the Japan premiere of his movie "The Revenant" in Tokyo, Japan, March 23, 2016. Photo: Reuters
A gaucho is unseated by an unbroken or untamed horse during Creole week celebrations in Montevideo, March 23, 2016. All Easter week gauchos all over Uruguay and neighboring Argentina and Brazil come to Montevideo to compete for the award of best rider. Photo: Reuters
Children stand in line as they attend "Freedom Marathon" marking the fifth anniversary of the Syrian crisis, in the town of Marat Numan in Idlib province, Syria, March 23, 2016. Photo: Reuters
