The United Nations chief appealed for funding Friday for the beleaguered UN agency helping Palestinian refugees in Gaza and elsewhere in Middle East, accusing Israel of issuing evacuation orders that force Palestinians ‘to move like human pinballs across landscape of destruction and death’.

Secretary-General Antonio Guterres told a donor's conference that the agency, known as UNRWA, faces ‘a profound funding gap’. UNRWA Commissioner General Philippe Lazzarini said at the start of the conference that the agency only had funds to operate through August, reports AP.

At the end, Lazzarini briefed reporters that, while the total amount in pledges won't be known until next week, he is confident there will be enough new money in its $850 million annual budget to keep the agency running until the end of September.

UNRWA's 30 thousand staff provide education, primary health care and other development activities to about 6 million Palestinian refugees in Gaza, the West Bank, Jordan, Lebanon and Syria. In the coming months, Lazzarini said UNRWA will be seeking funds to keep its operations going through December — and for emergency appeals for $1.2 billion for the Gaza war and $460 million for the Syria crisis, both of which only 20 percent funded.

Without financial support to UNRWA, secretary-general Guterres said that Palestinian refugees will lose a critical lifeline and the last ray of hope for a better future." The U.N. chief reserved his harshest words for Israel's ongoing military offensive in Gaza, which has affected its entire Palestinian refugee population.

"The extreme level of fighting and devastation is incomprehensible and inexcusable — and level of chaos is affecting every Palestinian in Gaza and all those desperately trying to get aid to them.