In accordance with EUAA COI methodology, a range of different published documentary sources have been consulted on relevant topics for this report. These include: COI reports by governments; information from civil society, advocacy groups, humanitarian organisations, and NGOs; international and NGO human rights reports; reports produced by various bodies of the United Nations; Syrian and regionally-based media; academic publications and think tank reports and specialised sources covering Syria. All information from these sources was consulted within time constraints.
In addition to using publicly available documentary sources, this report draws on information obtained through interviews conducted with several oral sources. The sources were assessed for their background, publication history, reputability and current ground-level knowledge. All oral sources are described in Annex 1: Bibliography.