The classification of political prisoners affects the treatment they receive, the charges made against them, and measures that can be taken in their defence. Prisoners may be classified in a way that ensures their continued detention or conviction if they are brought to trial, and they may be reclassified if these classifications are found to be insufficient. Classifications may be used to cut off access from outside organizations working for international justice. Political prisoners may be classified as common criminals; and the distinction may or may not be accurately drawn between military and civilian detainees. Prisoners charged with acts of violence are accorded a different status; ideological deviants may be classified insane (such as in USSR) and charges of espionage may be produced in order to make intervention for the defence very difficult.