Amateur videos show police in Bahrain shooting gas grenades into houses - a practice banned under international law. As the houses fill with suffocating tear gas, seniors and children die first. At least 39 people are known to have died like this - a small figure in comparison to the 1,400 Syrians killed by Sarin gas last summer. But both attacks shared one thing in common - the chemicals were later traced back to Europe. This investigation goes worldwide to reveal how Bashar al-Assad, the dictatorship in Bahrain and Saddam Hussein were all able to buy and make weapons prohibited by the international community.

 
Jean-Baptiste Renaud, 28, is a French investigative reporter. He directed and co-directed several investigative documentaries for major French networks including France 2 and Canal+. His investigations usually focus on international issues, especially human rights abuses.