Fidel Castro, the Cuban revolutionary leader who built a communist state on the doorstep of the US, has died aged 90.

Cuba's former president Fidel Castro, one of the world's longest-serving and most iconic leaders, has died aged 90.
His younger brother and successor as president Raul Castro announced the news on state television.
Castro toppled the government in 1959, introducing a Communist revolution. He defied the US for decades, surviving many assassination plots.
His supporters said he had given Cuba back to the people. Critics saw him as a dictator.
Ashen and grave, President Castro told the nation in an unexpected late night broadcast on state television that Fidel Castro had died and would be cremated later on Saturday.
"The commander in chief of the Cuban revolution died at 22:29 hours this evening (03:29 GMT Saturday)," he said. "Towards victory, always!" he added, using a revolutionary slogan.
A period of official mourning has been declared on the island until 4 December, when his ashes will be laid to rest in the south-eastern city of Santiago.
The leader of the 1959 revolution, which overthrew the US-backed dictator Fulgencio Batista, defied the US efforts to topple him for five decades, before ill health led him to make way for his brother Raul, 84, in 2006.

In his final years, Fidel lived in relative seclusion, but occasionally wrote opinion pieces or appeared meeting with visiting dignitaries.