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Nuns wait as worshippers gather in Revolution Square for the arrival of the Pope Benedict XVI to celebrate a Mass in Havana, Cuba, Wednesday, March 28, 2012. Pope Benedict XVI wraps up his visit to Cuba on Wednesday with an open-air Mass in the shrine of the Cuban revolution.(AP Photo/Ramon Espinosa)

Nuns wait as worshippers gather in Revolution Square for the arrival of the Pope Benedict XVI to celebrate a Mass in Havana, Cuba, Wednesday, March 28, 2012. Pope Benedict XVI wraps up his visit to Cuba on Wednesday with an open-air Mass in the shrine of the Cuban revolution.(AP Photo/Ramon Espinosa)

Pope wraps up Cuba trip

Pope Benedict criticized the 50-year-old U.S. trade embargo on Cuba as he wrapped up a three-day visit to the Communist-run island on Wednesday, March 28, 2012, urging reconciliation and greater freedoms.