The introduction of drones “makes possible perpetual war without costs”, warns the anthropology professor and security expert Hugh Gusterson. Here he selects the best books that examine their ethical, psychological and political impact upon 21st century warfare.

It’s hard to remember when in the midst of one, but terrorism campaigns do always end. Audrey Kurth Cronin, author of How Terrorism Ends, recommends the best books on terrorism.

Terrorism is a misused, overused term. Correctly used, it refers to a specific form of asymmetric warfare. The Northern Ireland peace negotiator tells us how and why it starts and what can end it.

Many thought that 9/11 was the start of an Al-Qaeda assault on the West, but it turned out to be Bin Laden’s Pearl Harbor – a victory that led to strategic defeat – says Peter Bergen, one of the few reporters who met the Saudi-born militant.

The neoconservative view that the US has a special mission in the world was supercharged by 9/11. There was also a sense that 9/11 could make America better. Sadly it didn’t work out that way, says Peter Beinart

The author of an acclaimed book on Al-Qaeda tells us what he learnt about militants when he was caught in a firefight in Iraq, and suggests what we should read to understand their motivations

The veteran Middle East correspondent gives us his tips for the best reading about the US-led invasion and occupation, and explains why the West shouldn’t have intervened in Iraq in the first place

The award-winning BBC documentary maker tells us what he’s learned in 10 years investigating Al-Qaeda, and suggests what we should read to understand where the group came from, and what it’s still trying to do

The former FBI Chief Negotiator says that negotiators need to come across as non-threatening and non-judgmental. And active listening isn’t just something you use in a hostage situation; it’s important in everyday life, too

Princeton professor Bernard Haykel’s fascinating selection of books paints a worrying picture of a country at odds with the cultural riches of its past. With internal conflicts and poor governance, Al Qaeda is the least of its problems.

International terror expert Jessica Stern believes terror is addictive. When they begin their careers terrorists often believe that they are making the world a better place

Global security consultant says sending armed forces into another country based on purely moral, gut feelings of good and evil is a dangerous policy-making premise. He chooses books on Iraq, Afghanistan, Iran and Al Qaeda

The author and SAS veteran discusses the Politics Of War. Argues that it’s all about money and politics. On Aghanistan he recounts ‘I saw a girl of eight or nine doused in petrol burning and everyone was ignoring her’

Author and cultural historian who has published widely on conspiracy theories, selects five books on the different concepts of politically motivated killing and asks whether assassination can ever by justified

Director of Landmine Action who served in British army with the Black Watch, talks crime and terror and explores the extent to which al Qaeda is the creation of the Pakistani Intelligence Services backed by Saudi money

The Professor of Strategic Studies at Johns Hopkins University picks five books you must read to understand the War on Terror, starting with one that tries to define what terrorism is.

The longtime chief investigative reporter for Al Jazeera Arabic gives his verdict on the 9/11 Commission: “An insult to our intelligence and a disgrace to humanity”

The author and broadcaster says that for anybody wanting to go into politics a mastery of the French revolution is an enormous help, and will deepen their understanding of what they ought to be doing today