What is Foreign Terrorist Fighters

Terrorism is relatively recent in history, but in this short time, it has experienced a radical and progressive change in many ways. Starting from the teaching of the Athenian historian Thucydides, it is necessary to trace a brief history of terrorism to better understand a phenomenon that has proven extremely dynamic and complex. Born in France at the end of the 18th century, it was an instrument of intimidation and repression that was very useful for authoritarian regimes that took power over the centuries, but it was even more so for non-state actors who later used such violent actions to counteract the states. Today, the threat of terrorism is very different from the past: it is global, indiscriminate, and mostly of a political-religious nature, placing the need to review security measures and adapt them to new circumstances.