When pigs fly
![](https://rosalux.org.br/wp-content/uploads/th_8b8404c5292eba1ffc29fac909b4a9ff_cubaus_map2.png)
It was a real sensation: On 17 December 2014, when the heads of state of Cuba and the United States announced their intention to normalize relations between the two states, which had been frozen for over a half century, the global public reacted with surprise. What led to this change?