US President Barack Obama arrives in Panama City on April 9, 2015 for a summit of leaders from the Americas, where thawing ties with Cuba top the agenda. Regional leaders begin to arrive for a historic Summit of the Americas that will see the US and Cuban presidents sit face to face for the first time in decades. AFP PHOTO / RAUL ARBOLEDA / AFP / RAUL ARBOLEDA (Photo credit should read RAUL ARBOLEDA/AFP via Getty Images)
