New evidence is linking some of those deaths to weapons made in the West.
Investigative journalists analysed the classified document, which contradicted public claims from France and the United States that their weapons were only used for defensive purposes and not on the front line.
Many nations, including France, are part of a UN treaty banning the sale of weapons that aid human rights violations and war crimes.
Is the international community turning a blind eye?
Presenter: Hashem Ahelbarra
Mohammed Jumeh – member of the Yemeni National Dialogue Conference
Pieter Wezeman – senior researcher in the arms transfers and military expenditure programme at the Stockholm International Peace Research Institute
Glenn Carle – former deputy national intelligence officer for transnational threats on the US National Intelligence Council