Syria’s neighbours are sharply reducing numbers of refugees from the conflict that they let onto their soil, two prominent humanitarian agencies say.

Fewer than 18,500 fled Syria in October compared with more than 150,000 a month on average in 2013.

The NGOs accused the international community of “a total collapse of solidarity”.

More than 3m people have fled Syria since the conflict began in 2011, with millions more internally displaced.

The joint report by the Norwegian Refugee Council (NRC) and the International Rescue Committee (IRC) said many civilians who wanted to flee were now in effect trapped in Syria.