US President Barack Obama arrives in Cuba

Barack Obama on Sunday became the first US president in 88 years to visit Cuba, touching down in Havana for a landmark trip aimed at ending decades of Cold War animosity. "¿Que bola Cuba?" Obama tweeted on landing, using Cuban slang to ask what's going on. Moments later, a smiling Obama emerged from Air Force One with his wife First Lady Michelle and their two daughters Sasha and Malia, clutching umbrellas to shield themselves from a warm afternoon rain shower.