A report by international charity Oxfam on Monday showed some of the countries most deeply involved in Syria's civil war, including Russia, Saudi Arabia and France, are among the least generous in helping its victims. Oxfam released the report ahead of a donor conference in London on Thursday along with an appeal for increased aid and resettlement abroad for 10 percent of the refugees registered in Syria's neighbours by the end of the year. Most rich countries were contributing less than their "fair share" of financial aid, the amount a country should contribute relative to the size of its economy. Countries gave 56.5 percent of the $8.9 billion requested by aid appeals for 2015, it said.