NATO leaders meet in Belgium today; many are worried about US President Trump's habit of breaking diplomatic norms. History is filled with other leaders acting bullishly, often with poor results.
After the US invasion brought their dictator down, Iraqis' everyday lives were marked by chaos and violence.
Was the early conception of IS a branching-out of the old Baath party? Or was it, as some argue, completely separate with no connection at all? Reality is probably a bit of a mix of both.
The first President Bush had some impressive foreign policies wins, but could he be best remembered for getting the US entangled in Iraq?
A scholar who has profiled the likes of Saddam Hussein and Vladimir Putin says there is a method to understanding the madness.
Using nerve agents is banned under the Chemical Weapons Convention, but North Korea is not a party to it.
As the Chilcot report finally sees the light of day, the former leader's motives need to be seen in their full context.
Nearly three decades after the horrific gas attack by Saddam Hussein, Kurds are waiting for the world to recognise a genocide.
The rise of Islamic State and its declaration of the caliphate can be read as part of a wider story that has unfolded since the formation of modern nation states in the Muslim world.
The former British PM did not go far enough with his apology.