Spanish Socialist Pedro Sánchez has been sworn in as the country’s new prime minister by King Felipe after the ousting of conservative Mariano Rajoy.
Mr Sánchez, who is an atheist, took the oath to protect the constitution without a bible or crucifix – a first in Spain’s modern history.
He plans to see out the remaining two years of the parliamentary term.
The Socialist leader won the support of six other parties to remove Mr Rajoy over a massive corruption scandal.
As Spain’s new prime minister, whose party only has a quarter of the seats in parliament, he now has to decide who to include in his cabinet and is expected to name them next week.
In a brief ceremony at the royal residence in Madrid on Saturday, Mr Sánchez, 46, promised to “faithfully fulfil” his duties “with conscience and honour, with loyalty to the king, and to guard and have guarded the constitution as a fundamental state rule”.