A new report says the plight of people fleeing Syria's civil war has reached "a new level of hopelessness" as overstretched neighbors make it more difficult to leave and developed countries resettle a tiny number of refugees.

The report by the International Rescue Committee and the Norwegian Refugee Council says the number of refugees has dropped sharply, with 18,483 registered in October, while an average of 150,000 were registered each month in 2013.

"We are witnessing a total collapse of international solidarity with millions of Syrian civilians," Norwegian Refugee Council Secretary General Jan Egeland said in a statement.

Syria's neighbors, including Lebanon and Jordan, have warned they were at the breaking point. Tiny Lebanon last month began rejecting all but "exceptional" refugee cases.

About 3.3 million people have fled Syria.