The Roja skipper is confident ahead of next summer's tournament and Sergio Ramos believes that his side will be the team to beatIker Casillas is determined to help Spain continue making history by lifting the World Cup once more in Brazil next summer.
La Roja won the trophy last time out, with European Championship triumphs coming either side of the victory in 2010.
And the Real Madrid skipper is determined to lead his side to its fourth major tournament in a row.
He said at his side's kit launch: "We’re delighted with the new kit and we are excited about going to the World Cup. We want to make our mark in Brazil and make history once again."
Sergio Ramos, meanwhile, says he is confident that Spain can retain the trophy, with the tournament now just seven months away.
He added: "We’re really fired up, confident and keen to defend the trophy. A lot of the other national sides want to snatch the cup from us but what’s stopping us from winning it again?"
Spain will discover its group stage opponents during the World Cup draw on Dec. 6.