A campaign is under way to drive the UN relief agency for Palestinians, Unrwa, out of existence, its commissioner general has said, days after 18 people were killed when Israeli jets bombed an Unrwa school in Gaza.

Philippe Lazzarini said in an interview that the Israeli government was seeking to close down the agency, having failed to persuade western donors to stop funding it on the grounds of allegations about links between Unrwa staff and Hamas.