Former Manchester City player Mikheil Kavelashvili was formally sworn in as president of Georgia on Sunday, 29 December, amid mass protests against his inauguration.
The outgoing president says Mr Kavelashvili was not duly picked, as lawmakers who chose him were elected in an October parliamentary election that she says was marked by fraud.
Salome Zourabichvili, a pro-EU critic of the ruling party, said in a speech to supporters outside the presidential palace that she was leaving the residence but remained the legitimate officeholder.
The Georgian Dream party and the country's election commission said the election was free and fair.
The 53-year-old hardline critic of the West is allied with the ruling Georgian Dream party.