text: US President Barack Obama prepares to review a guard of honour upon arrival to Cartagena de Indias, Colombia, on April 13, 2012, to take part in the VI Summit of the Americas. Leaders of the 34 member states of the Organization of American States (OAS) will attend the summit to take place April 14 and 15. Summit talks will include the scourge of drugs, the return of Cuba to the Organization of American States (OAS), the Falklands-Malvinas issue and regional integration. AFP PHOTO/Alfredo Estrella (Photo credit should read ALFREDO ESTRELLA/AFP/Getty Images