It's been a decade since Islamic extremist gunmen stormed the offices of satirical newspaper Charlie Hebdo in a deadly assault that shook France to its core.

Former French President François Hollande has told a special terrorism court in Paris that the man who drove a truck into a crowded boardwalk in Nice on Bastille Day six years ago was responsible for “a terrorist act.”.

The trial of 20 men accused in a series of coordinated attacks on Paris in 2015 that spread fear across Europe and transformed the nation has opened in a custom-built complex embedded within a 13th-century courthouse.

Survivors of Islamic State group's 2015 attack on Paris and those who mourn the 130 people killed that night are bracing for a long-awaited trial that starts this week in Paris.