New Real Madrid coach Julen Lopetegui said his sacking by Spain on Wednesday was one of the saddest days in his life.
After Madrid announced his appointment as Zinedine Zidane's successor on Tuesday, Spain sacked Lopetegui on the eve of the World Cup in Russia.
Lopetegui, speaking at his presentation as Madrid's new coach on Thursday, said he is delighted to take charge and the goal is to win everything.
"Yesterday was, after the death of my mother, possibly the saddest day of my life, but today is the happiest," Lopetegui told reporters.
"This is an emotional day, thank you president (Florentino Perez), thank you Real Madrid, for your trust in me and this responsibility I take a lot of pride."
President Perez said Madrid announced the appointment of Lopetegui before the World Cup because they wanted to be transparent and avoid it leaking out during the tournament.
"You must be feeling contradictory feelings, you had two dreams, to win the World Cup and coach Real Madrid, two dreams which were perfectly compatible," Perez said.
"We wanted to make this agreement quickly, before the World Cup, to make it transparent and avoid any speculation and rumours."
The 51-year-old Lopetegui replaces Zidane, who quit as Real coach just days after winning a third consecutive Champions League title last month.
Despite his sadness at being sacked by Spain, Lopetegui wants his former players to win the World Cup, adding to their 2010 triumph, and will be following as they kick off their campaign against Portugal on Friday.
"I will watch the game, I will support them like any Spaniard," he said.
"I feel part of this team, I'm sure we will have a magnificent World Cup, despite everything."
Lopetegui insisted he did not feel humiliated by what happened with the national team but would have liked things to have been handled differently.
"I've acted in an honest way despite the things that have been said. We have been professional, honest and clear," he said.
"I would have liked (Spanish FA president, Luis) Rubiales to do things differently.
"Loyalty is telling the truth. The agreement (with Madrid) was closed before the World Cup, not during.
"I had been honest and transparent and had nothing to hide."
Lopetegui, a former Madrid goalkeeper - he played just one first-team game in 1990 - and coach of the B team, has been told he is coming back home.
"I got a message from a special person who told me 'I knew you at 18 in this house and you are coming home', which really excited me.
"We will work from the first minute and whatever happens, we will have the best team possible."