"[I am] calling on our partners — the host countries and our donors including those in the region — to rally in support and join UNRWA in creating new funding alliances and initiatives to ensure Palestine Refugee students continue to access education in our schools and the dignity of Palestine refugee children and their families is preserved through all our services," Kraehenbuehl said.
He described the current situation as a "formidable challenge" in the fulfillment of the UNRWA mandate to provide Palestinians with key services such as education and health care.
Another consequence of the US decision, according to Kraehenbuehl, is the destabilization of the situation in the Middle East.
"The reduced contribution also impacts regional security at a time when the Middle East faces multiple risks and threats, notably that of further radicalization," he said.
The UNRWA commissioner-general also assured Palestinians that the organization would continue to provide them with key services.
On January 5, media reported that the United States had frozen $125 million in funding to the UNRWA. On Tuesday, the State Department spokeswoman Heather Nauert said that Washington had decided to freeze $65 million in funding for the UN agency, however $60 million would be provided to sustain schools and health facilities.
The US step followed the January 2 tweet of US President Donald Trump, who accused the Palestinians of a lack of willingness to hold talks with Israel and expressed dissatisfaction that Palestine had no respect for the United States despite massive financial aid by Washington.