A ceremony was under way in Paris on Sunday to honour nearly 150 victims of terrorism in the country last year.
French President Francois Hollande and Paris Mayor Anne Hidalgo were to unveil a plaque at Place de la Republique, which became a defiant gathering place after the first attacks in January 2015 that targeted the Charlie Hebdo satirical magazine.
Thousands returned to the iconic square in November following a series of strikes in Paris.
Charlie Hebdo's offices were attacked on January 7, 2015, the first incident of three days of terror that ultimately led to 17 civilian deaths.
Coordinated attacks in Paris on November 13 in bars, a theatre and a football stadium, killed 130 people.
French singer Johnny Hallyday will perform Un dimanche de janvier (A Sunday in January) to mark the day exactly one year ago, when more than 3.7 million people took to the streets of France to honour the victims of the first attacks.
Joining that march in Paris were 40 world leaders, who locked arms in a show of unity against terrorism and extremism.