Those who sell or facilitate weapons to individuals that will commit human rights violations know that they have responsibility for the death and misery caused by those weapons and at some stage may be liable to face the International Criminal Court for complicity in war crimes and crimes against humanity.
2013, UN rights expert hails Arms Trade Treaty and urges States to do more to also regulate production
UN rights expert hails Arms Trade Treaty and urges States to do more to also regulate production[ohchr.org]